Fir tree branches make excellent insulation from the cold.
冷杉的树枝有良好的抗风寒性能。
The sound insulation equipment in the concert hall was imported from the us.
音乐厅的隔音设备是从美国进口的。
They are difficult to live in and provide little insulation from temperature extremes.
因为帐篷不易居住，且在恶劣气温条件下只能起到很微弱的御寒或隔热作用。
They are difficult to live in and provide little insulation from temperature extremes.
因为帐篷不易居住，且在恶劣气温条件下只能起到很微弱的御寒或隔热作用。
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