1、To ensure teamwork and efficient operation of the hotel through team spirit development.
促進和發(fā)揚團隊精神，保證酒店各項工作高效有序地進行。

2、Adjustable impeller and the clearance between the boards to ensure efficient operation of the pump.
可調(diào)節(jié)葉輪與護板之間的間隙，保證泵的高效運行。

3、has realized a safe, reliable and efficient operation of the system
實現(xiàn)了系統(tǒng)安全、穩(wěn)定、高效運行

efficient operation翻譯