volatile gas短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 植物精气 The volatile gas of the paint can reduce the useful life. 2, In everyday use, it is best to hole the handle to insert the lock- tongue into the lock. Do not let off until the door is closed. 锁具在平日开关门的过程中，最好握着执手把锁舌旋进锁体，关好门后再松手，不要用力撞门，否则会减少使用寿命。 men800