1.Ensure there is a free flow of air around the machine. 要确保机器周围空气畅通。 2.Let's go and get some fresh air. 咱们出去呼吸点新鲜空气。 3.During the birth she was given gas and air. 她分娩时用了**混合气体。 4.He came to the surface of the water gasping for air. 他浮出水面急促地喘着气...
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