Dibutyl ethylenediphosphonic acid(dbedp)
[化] 亚乙基二膦酸二丁酯
🗣️ 情景例句
Forgive me for interrupting, but I have a question.
对不起我插个嘴,我有一个问题。
It is better to ask for help at the beginning rather than to wait until a busy period when everyone is rushed off their feet.
最好在开始工作时就请人帮忙,而不是等到大学都忙得不可开交的时候。
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