line check的用法和樣例：
例句
- They said that they should check up and repair the machines.
他們說(shuō)過(guò)要檢修這些機器。 - Service of check valve components shall be through a single stainless steel access cover secured with stainless steel bolts.
維修止回閥部件應該通過(guò)唯一的用不銹鋼螺栓緊固的不銹鋼檢修蓋進(jìn)入進(jìn)行。
