1.undergo 经历
New recruits have been undergoing training in recent weeks.
新兵们最近几周一直在接受训练。
2.donor 捐赠者
Doctors removed the healthy kidney from the donor.
医生从捐献者体内取出了健康的肾脏。
3.reliably 可靠地
It's been working reliably for years.
它多年来运转一直很稳定。
4.resistance 抵抗力；免疫力
This disease is surprisingly difficult to catch, as most people have a natural resistance to it.
这种病令人惊讶的难以患上，因为大多数人对它有一种先天的免疫力。
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