I have to teach kids how to eat with a knife and fork and sit at a table instead of using a fork in a plastic container in front of the television.

我非得要教孩子们如何坐在餐桌前使用刀叉进餐，而不是坐在电视机前拿着塑料盘子用一把叉子吃饭。

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In the mineral table of hardness, it has a rating of 8, which means that a knife cannot cut it, and that topaz will scratch quartz.

在矿石硬度表上，它的硬度为8，这表明刀子不能割开它而它可在石英上划痕。

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The steak knife is a dining knife used at a table setting when meats are served.

牛排刀是餐厅用刀，一般是在用餐时候切肉用。

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