Sadh
（植物生长调节剂）丁酰肼
🗣️ 情景例句
What kinds of articles have you written?
你写过一些什么样的文章？
It is better to be safe than sorry.
事后追悔不如事前稳妥。
Twenty or thirty pages of information handed to any of the major world powers around the year 1925 would have been sufficient to change the course of world history.
如果把二三十页的情报交给1952年前后的任何一个世界强国，就足以改变世界历史的进程。