Tetraethyl-succinic acid
[化] 四乙代丁二酸
?? 詞語組成解析
a. [化]四乙基的
[化]琥珀 的, 丁二酸的, 琥珀酸的
??? 情景例句
But first in the school-rooms.
但首先是在教室 。
You've already quoted a price of $ 800 per 1,000. Is there a discount for larger orders?
你報的價是每1000個要美金800元，如大量訂購有折扣嗎？
You are never too old to learn.
活到老，學到老。