一种平底小船，两头为方形，用浆或篙在浅水航道划行。

A small flat-bottomed boat with square ends, paddled or poled on shallow waterways.

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非要使用PTFE(聚四氟乙烯)内衬的平底锅时，应保证炉头处于中等或更低温度。另外，绝对不要预热空无一物的平底锅。

If you must use a PTFE-lined pan, keep your stove's burner on medium or lower. Also, never preheat an empty pan.

youdao

非要使用PTFE(聚四氟乙烯)内衬的平底锅时，应保证炉头处于中等或更低温度。另外，绝对不要预热空无一物的平底锅。

If you must use a PTFE-lined pan, keep your stove's burner on media or lower. Also, never preheat an blank pan.

youdao