Lacticcasein
乳酪素
🗣️ 情景例句
There's no room for any excuse for what you have done.
你的所作所为没有辩解的余地。
What number are you calling?
你打什么号码？
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。