1.infectious a.有传染性的,易传染的
例句：Diphtheria is a serious infectious disease.
白喉是一种严重的传染病。
2.decrease v.减少,减小
例句：Air pressure decreases with altitude.
气压随海拔高度的增加而下降。
3.depression n.压抑,抑制,沮丧;萧条,衰退；洼地
例句：His mood oscillates between euphoria and depression.
他的心情在幸福感兴沮丧的两极端间游移。
4.mistrustful a.不信任的,深疑的
5.abnormality n.不正常,反常
例句：An ultrasound scan can detect abnormality in a fetus.
超声波扫描能够检测出胎儿是否畸形。
6.ward vt.守护,保卫,防止,挡住
例句：Ward off an opponent's Blows.
避开对手的一击
7.resistant a.抵抗的,反抗的
8.manipulate vt.熟练控制[操作]
例句：Primitive man quickly learned how to manipulate tools.
原始人很快就学会了使用工具。
9.convert vt.vi.(使)转变, (使)转化
例句：We convert him, and we capture his inner mind; we reshape him.
我们要改造他, 从思想上把他争取过来, 让他脱胎换骨。
10.promising a.有希望的,前途有望的
例句：The results of the experiments are very promising.
实验的结果充满了希望。
1.The New York Times newspaper reports that, on average, people experience feelings of loneliness about forty-eight days a year.
on average平均，按平均数计算
例句：On average the battery will last between 2-3 hours.
平均来说，电池可以持续供电2-3小时。
2.The study suggests that people can take steps to stop the spread of loneliness.
take steps采取步骤,采取措施
例句：He is taking preliminary steps to solve the problem.
他正采取初步的步骤来解决问题。
3.1.Economic losses from the disease amount to an estimated one percent of the African economy each year.
amount to共计
例句：The bill amounts to $500.
这张账单共计500美元。
意味着
例句：His words amounted to a threat.
他的话实际上是威胁。