尖钻头
Patients were generally anxious about dental drill, sharp instruments, injector, doctor's attitude previous dental consulting environment.
患者对牙钻 、 检查用的尖锐器械 、 注射器、牙医态度 、 就诊环境等均有不同程式的焦虑.
I ask Mawu to drill a hole on the iron with his sharp teeth, make a clear break of semicircle and raise the cover of the can.
我便教玛乌,先用尖牙扎穿铁皮,然后顺势划出一个半圆,这样就能将盒盖掀起了。
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