Improsulfan
[化] 英丙舒凡; 胺丙磺酯
🗣️ 情景例句
Don't cross that bridge till you come to it.
没到河边，先别操心怎么过桥。
An old physician, and a young lawyer.
医生年老的好，律师年轻的俏。
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。