heed to give attention to
...easure for the area of land which equals) 10000 square meters：（面积单位）公顷 heed to give attention to：留意到；留心 helium a gas that is a simple substance (element) that is lighter than air, will not burn and is used e.g.
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heed to give attention to
注意:给予注意
以上为机器翻译结果，长、整句建议使用 人工翻译 。