L.f.d.
[医] 最低致死量(毒素)
🗣️ 情景例句
and a book of photos about the United States still feels right.
而一本关于美国的摄影集仍然很有前景。
Foam plastics are applied to protect the goods against press.
泡沫塑料用来防止挤压。
Thanks very much. I must go!
谢谢，我必须走了。