给舌头打洞装舌钉常常会导致口腔感染，牙齿的磨损与破损，或是口腔外伤。
Tongue piercings have also been associated with infections, chipped or broken teeth, and gum trauma.
分析了切削硬岩时的刀具磨损和破损特征。
刀具的磨损和破损是切削加工研究的重点。
The cutting abrasion of tools is the focus in cutting study.
刀具的磨损和破损是切削加工研究的重点。
The cutting abrasion of tools is the focus in cutting study.
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