Antimicrobial
a. 抗菌的\\nn. 抗菌剂
🗣️ 情景例句
My niece is getting married,
我侄女即将结婚，
One cannot make a silk purse out of a sow's ear.
朽木不可雕。
But here we come up against the most difficult of all obstacles to contact with people on other planets ----the astronomical distances which separate us.
然而，在和外星人联系中我们遇到的最大困难是分隔我们的天文距离。