Protective antigen
[化] 保护性抗原
🧩 词语组成解析
antigen
['æntidʒən]
n. 抗原;
🗣️ 情景例句
He gave them to me to hold on to them
他给我戒指， 要我自己保管，
Hares may pull dead lions by the beard.
虎落平阳被犬欺。
Almost any day a young porpoise may be seen trying to turn a 300-pound sea turtle over by sticking his snout under the edge of his shell and pushing up for dear life.
几乎每天都可以看到一只小海豚把鼻子顶入一只300磅重的海龟的硬壳下面，拼命地把它翻过来。