Acethydrazide
乙酰肼
🗣️ 情景例句
Fine.
好啊。
Prosperity makes friends and adversity tries them.
富裕招致朋友，困苦考验朋友。
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明，又迈进了一大步，因为这样一来，知识不仅能交流，而且能储存了。