Hydroxysanguinarine
羟基血根碱
🗣️ 情景例句
They're in my office.
在我办公室。
That's what I guessed.
跟我猜的一样。
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。