Oilgear
油齿轮; 润滑齿轮; 甩油齿轮
🗣️ 情景例句
Never know what?
说不定什么？
She is timid and completely at a loss what to do.
她羞臊得不知所措。
'I was in my office as usual,' answered the Ambassador.
“我和往常一样，在办公室里，”大使回答说。