But you have to use a safe method, or you could do a lot of damage.
但你得用一种安全的方法,否则可能会造成伤害。
Special inversion racks are usually used to provide a safe method for cylinder inversion.
通常使用专门的倒置架来安全地倒置钢瓶。
Earwax removal is sometimes necessary. But you have to use a safe method or you could do a lot of damage.
清除耳屎有时是必需的,但你必须用一种安全的办法,否则你会受到伤害。
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