Herd immunity
[医] 群体免疫
🧩 词语组成解析
herd
[hɝd]
n. 兽群;牧群;放牧人;<蔑>群众，民众;
vt.& vi. 群集，纠结;
vt. 放牧;（使）向…移动;使成群;
immunity
[i'mju:niti]
n. 免除，豁免;免疫力;
🗣️ 情景例句
Two hours from now.
从现在起还有两个小时。
The missile is in pursuit of the jet.
导弹追赶着喷气机。
On his arrival he was sold to a farmer and worked in the fields.
一到美国，他就被卖给了一个农场主，到地里干活。