Backing weld(ing)
[化] 打底焊
🧩 词语组成解析
backing
[['bækiŋ]]
n. 后退, 衬背, 后援, 支持者\\n[化] 衬垫
🗣️ 情景例句
will read a poem by Robert Frost.
要朗读Robert Frost作的一首诗。
Ladies and gentlemen, I appreciate your...vote.
各位先生，女士，恳请赏赐一票。
Before you leave the lab, make sure the electricity is turned off and the windows are shut.
你们离开实验室前，务必要关上电源，关好窗户。