Echinococci
echinococcus的复数
🗣️ 情景例句
And nice meeting you, too, Mrs. Tobin.
我也很高兴见到你，Tobin太太。
Excuse me I don't know.
对不起我不知道。
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。