This moisture will build up inside the shell and make the down damp, killing its insulation power.

这水分将建立内壳和作出的向下潮湿，造成其绝缘的权力。

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This moisture will build up inside the shell and make the down damp, killing its insulation power.

这水分将建立内壳和作出的向下潮湿，造成其绝缘的权力。

youdao