But asteroids were generally thought to be dry. Or at least frost-free.

不过，小行星被公认是干燥无水的，至少是不会结霜。

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Today's modern, frost-free refrigerators work to draw the moisture out of the air, and consequently also out of the food.

今天现代的无霜冰箱能吸走空气中的水分，结果同样也会吸收食物中的水分。

youdao

Today's modern frost-free refrigerators work to draw the moisture out of the air and consequently also out of the food.

今天现代的无霜冰箱能吸走空气中的水分，结果同样也会吸收食物中的水分。

youdao

The efficient compressor lets you afford a bigger unit -- a frost-free one, with an icemaker -- and you're right back where you started.

FORBES: Insights: The energy diet that flopped

Northern Ireland and parts of the north of Scotland remained frost-free.

BBC: UK freezes as night-time temperatures fall