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1.injection n.注射
They gave me an injection to help me sleep.
他们给我打了一针帮助我入睡。
2.lifetime n.一生
His diary was not published during his lifetime.
他的日记在他生前未曾发表过。
3.infectious adj.传染的
Infectious diseases are spreading among many of the flood victims.
传染病正在遭受洪灾的很多灾民中蔓延。
4.population n.数量
The population has increased from 1.2 million to 1.8 million.
人口已从120万增加到了180万。
5.In his lifetime, researchers estimate he fathered at least three groups of baby bears.
at least 至少
It takes at least an hour to get home from work.
下班回家至少得花一个小时。
They won't arrive for at least two hours yet.
他们至少要过两个小时才能到。
6.The bear had lost a lot of weight and was killing young farm animals.
a lot of 大量的
We've got a lot of hard work ahead.
我们往后还有很多艰苦工作要做。
There has been a lot of resistance to this new law.
这项新的法规已经遇到很多的抵制。
