锉的英文

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They file their teeth to sharp points .
他们锉利自己的牙齿。
You know what a file is ?
你知道什么叫锉吗？
The file bites the metal .
锉刀锉得深。
There, on the outside wall, we saw the end of file, sawing in and out, cutting through the brick .
顺着他指的方向我们看到在界墙上有个锉刀头在一进一出地锉动，将砖头锯断。
Some designers use metal strips at the section where the orifices are to be, thus avoiding the difficulties of filing dissimilar materials .
有些设计员在钻孔的剖面上使用金属狭条，用以避免修锉不同材料所遇到的困难。