Osmogen
酶原
🗣️ 情景例句
I guess we must.
我想咱们是该开始了。
I told him to come in and wait here.
我告诉他进来在这里等。
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。