Dnchp
[医] 二硝基环己酚(灭螺药)
🗣️ 情景例句
we don't have to.
我们不必勉强。
A friend exaggerates a man's virtue, an enemy his crimes.
朋友宣扬人的美德，敌人夸大人的罪过。
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。