No tool rest, tongue guard or side guard.
没有靠山，舌形的护罩，侧面的护罩。
A sharp tongue is the only edged tool that grows keener with constant use.
尖刻的舌头却是一柄唯一的愈用愈锋利的刀子。
A closer inspection of the tool mark shows a series of parallel teeth marks, probably from the use of a plumber's wrench or tongue-and-groove pliers.
放大后的检验，可见一系列平行的齿纹，有可能来自管钳，会其他靠钳齿来抓牢工件并旋转的钳子。
The tongue is a good tool for us to taste food.
舌头是帮我们品尝食物的好工具。
The tongue is a good tool for us to taste food.
舌头是帮我们品尝食物的好工具。
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