Kollag
固体润滑剂
🗣️ 情景例句
I agree although I still have some reservations.
我基本上同意，但仍有所保留。
Skill and confidence are an unconquered army.
技能和信心是不可克服的军队。
The petrol had nearly all been used up.
汽油几乎已经用光。