Citroflex a-4
[化] (商)乙酰基柠檬酸三丁酯
🗣️ 情景例句
Did you know I can type almost 60 words per minuter?
你知道吗，我能每分钟打60个字。
How long has it been since you've heard from your uncle?
自从你听到叔叔的消息有多长时间了？
Do you go to work by bike?
你骑自行车上班吗？