Nonacosane
二十九(碳)烷
🗣️ 情景例句
Just make the few changes I suggested and your letter will be perfect!
只要改动我提到的个别地方，你的信就会很完美了。
It is better to be safe than sorry.
事后追悔不如事前稳妥。
How do they compare to last year's?
与去年的相比怎么样。