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最佳答案:put into useput into production 把...投入生产put into use 投入使用put into service 投入使用航海
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最佳答案:.0.
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最佳答案:The airport has been operational for one year.The airport has been in operation
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最佳答案:1.氢气的安全运输.2.氢气制备原料的选择应该选用价格低的.3.使用氢气作为燃料时的安全问题.
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最佳答案:this station has been put into use since 2008
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最佳答案:The airport will be put into service
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最佳答案:The railway station will be put into use in 2020 .望采纳(⊙o⊙)哦
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最佳答案:将瓶中空气抽出不影响其它气体的重装和气的纯度
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最佳答案:Workers are all glad _to_ _put_ the new machine _into_ _use_
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最佳答案:een used 20 centurisplaying made angry clean