____ of liquids through pipes. (A) The ..-阿摩線上測驗
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2F helen41038 小二上 (2014/06/26)
Valves control the flow of liquids through pipes. 閥門控制液體通過管道的流量。 The flow controlled by valves 由閥門控制的流量 For valves to control the flow 對於閥門控制流量 (以上GOOGLE 翻譯) Controlled by valves, the flow of liquids through pipes. (後一句沒有動詞) |
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