Citroflex-4
[化] (商)柠檬酸三丁酯
🗣️ 情景例句
by Robert Frost.
Robert Frost作。
How can you deny the facts?
你怎么能否定事实呢？
Which may keep company with the vessel for an hour without visible or more than occasional movement of wing.
它们随船飞行一小时也难得见其扇动一下翅膀。