三牙，读音为sān yá，汉语词语，意思是指三岁的牲口、三丫。
... 三烛光鱼 Polyipnus triphanos 三牙 Otolithes ruber 三眼大鼻鳎 Pegusa triophthalma ...
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三牙轮钻头 tricone bit ; three roller bit ; tricone rock bit ; three-cone bit
定向型三牙轮钻头 directional-type tricone bit ; type tricone bit
三牙轮管下扩大器 three-cutter underreamer
矿用三牙轮钻头 Blast hole tricone rock bits
锥柄三牙钻夹头 taper-shank triple-grip drill-chuck
三角牙螺丝 TRILOBULAR THREAD SCREWS ; TRIANGULAR SCREWS THREAD ; Thread Rolling Self-Tapping Screws ; Self-Tapping Screw-Thread Rolling
不锈钢三角牙螺丝 STAINLESS STEEL TRI-LOBULAR THREAD SCREWS ; STAINLESS STEEL TRIANGULAR SCREW THREAD
会议上提出的还是那些老掉了牙的话题：宏观经济政策、第三世界债务和环境问题。
The meeting produced the usual bromides about macroeconomic policy, third-world debt and the environment.
我每天刷三次牙。
在我的生命中，我仍然相信不可思议的三法宝——圣诞老人、复活节小兔和牙仙子。
In my life, I still believed in the magical trifecta—Santa Claus, the Easter Bunny, and the Tooth Fairy.
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