1.subtropical a.亚热带的
例句：The wahoo is a dark blue scombrid fish found in tropical and subtropical seas.
刺鲅是一种深蓝色的鲭科鱼，分布在热带和亚热带海域。
2.endangered adj.有危险的，濒危的
例句：The International Wildfowl Research Bureau watches over endangered species of birds thoughout the world.
国际野禽研究所关注着全世界的濒危鸟类。
3.expansive a.扩张性的, 使扩大的, 广阔的
例句：Under the nurture of the writhing Yellow River, the expansive middle land is thriving.
黄龙翻腾，广阔的中原大地在它的哺育下生机勃勃。
4.wetland n.湿地, 沼泽地
例句：There are about 101 families of wetland vegetation and about 8200 kinds of wetland bio-species.
湿地植被约有101科，湿地生物种类约有8200种。
5.complexity n.复杂, 复杂性, 复杂的事物
例句：A ubiquitous directory service eliminates complexity.
处处存在的目录服务消除了复杂性。
6.drain v.排出, 喝光, 耗尽
7.native a.本国的, 与生俱来的, 自然的
例句：He should take advantage of his native intelligence.
他应该好好利用自己天生的才智。
Spanish is my native tongue.
西班牙语是我的母语。
1.When many people think of Florida, images of sandy coastlines or theme park rides come to mind.
come to mind想起
例句：I just picked up whatever goods come to mind.
我只是想到什么就拿什么罢了。
The title just will not come to mind.
那个标题就是想不起来。
2.In addition, more than three hundred fifty bird species and three hundred species of fresh and saltwater fish live within the park.
in addition另外
例句：If you buy a dozen, you get a half dozen free in addition.
买一打，另送半打。
若后面有宾语，则用in addition to
例句：We have to give the users something new in addition to what we already offer,which is the only way to broaden the appeal of the website.
除了已经提供的服务，我们必须再为用户提供些新颖的服务，只有这样才能增加网站的吸引力。
3.The base played a part in the nuclear tensions between the United States and the Soviet Union.
play a part起作用，相当于play a role
例句：Exercise has a major part to play in preventing disease.
锻炼对于预防疾病有重要作用。
4.Today, fifty percent of south Florida's early wetland areas no longer exist.
no longer不再
例句：They were trying to put one over on us and they would no longer get away with it.
他们总是想花言巧语地骗我们，但是他们以后休想再得逞了。
They include what is said to be the largest growth of mangrove trees in the western half of the world.
what引导从句表达的意思：
1. 表示“……的东西或事情”：
They’ve done what they can to help her. 他们已经尽力帮助了她。
He saves what he earns. 他赚多少，积蓄多少。
What Mary is is the secretary. 玛丽的职务是秘书。
2. 表示“……的人或的样子”：
He is no longer what he was. 他已经不是以前的那个样子。
He is what is generally called a traitor. 他就是人们通常所说的叛徒。
Who is it that has made Fred what he is now? 是谁把弗雷德培养成现在这个样子的？
3. 表示“……的数量或数目”：
Our income is now double what it was ten years ago. 我们现在的收入是10年前的两倍。
The number of the students in our school is ten times what it was before liberation. 现在我校学生的数量是解放前的10倍。
4. 表示“……的时间”：
After what seemed like hours he came out with a bitter smile. 似乎过了几个小时他才苦笑着出来。
The young girl was too frightened to speak, standing there for what seemed like hours. 小女孩吓得不敢说话，在那儿站了几个小时。
5. 表示“……的地方”：
This is what they call Salt Lake City. 这就是他们称为盐湖城的地方。
In 1492, Columbus reached what is now called America. 1492年哥伦布到达了现在所称的美洲大陆。
That is why it is hard to tell a powerful storm, Hurricane Andrew, caused severe damage to the area in nineteen ninety-two.
why表语从句
在句子中起表语作用的从句叫做宾语从句。表语从句的引导词和主语从句的引导词相同。
What the police want to know is when you entered the room.
警察想知道的是你什么时候进的房间。
The trouble is that we are short of funds.
困难是我们缺乏资金。
This is what we should do.
这是我们应当做的。
That's why I want you to work there.
那就是我要你在那儿工作的原因。
His first question was whether Mr. Smith had arrived yet.
他的第一个问题是史密斯先生到了没有。
as if, as though, because也可用来引导表语从句。
She seems as if she had done a great thing.
她看起来好像做了一件大事。
It is because you eat too much.
那是因为你吃得太多了。
大沼泽地国家公园建于公元1974年，现在已经覆盖140万英亩。它位于佛罗里达州南部尖角位置，6英寸深、50英里宽的淡水河缓缓流过广袤的平原，因而造就了这种独特的大沼泽地环境。辽阔的沼泽地、壮观的松树林和星罗棋布的红树林为无数野生动物提供了安居之地。这里是美国本土上最大的亚热带野生动物保护地。园内栖息有300多种鸟类，其中像苍鹭、白鹭这些美丽的鸟类得到很好的保护。美洲鳄、海牛和佛罗里达黑豹也受到良好的保护。这些陆生和水生动植物居群相互适应，并且很好地适应了这里夏天湿润、冬天干燥的气候。但是对它们生存至关重要的生态因素——水流，却因南佛罗里达20世纪初开始的城市和乡村的发展受到严重的破坏。一半的原始湿地因此而干涸，流向国家公园的水被高高的水坝和无数的灌渠截流。湿地这种脆弱的生态系统变化开始向人们昭示了自然界和人类威胁之间的微妙关系。科学家和工程技术人员正在寻求新的途径来重建自然水流以满足大沼泽地环境的需要。
大沼泽地国家公园全年开放。每年的12月到来年的4月是旅游的旺季，5月到11月是旅游的淡季。无论是步行、乘坐独木舟、坐船还是乘坐缆车，都可以很好地观察野生动物，其中包括美洲鳄和许多温顺而好客的鸟类。
无论是在荒野还是在建成的野营地露宿，都能使您享受到大自然的无穷乐趣。园内工作人员的热情服务为您饱览公园、尽享快乐创造了条件。此外一边乘船沿着红树林游历，一边听着导游讲述有关火烈鸟和岸边旋涡的故事也是很好的游园方式。另外缆车为您在难以涉足的沼泽地探险提供了条件。