Ethocel
[化] 乙基纤维素
🗣️ 情景例句
Alexandra's a high-school exchange student from Greece.
Alexandra是从希腊来的交换高中生。
Could you hold your questions until I've finished?
请你把你的问题留到我把事情做完再问好吗？
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。