单词：reciprocating drill
reciprocating drill的用法和样例：
例句
- The rock drill is indispensable for digging coal mines.凿岩机是煤炭采掘不可缺少的工具。
- The factory was set up for drill production in TAI-CHUNG.于台中县青山设工厂，打造凿岩机用钻头。
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my God! poor Tashtegolike the twin reciprocating bucket in a veritable well, dropped head-foremost down into this great Tun of Heidelburgh, 天呀！可怜的塔斯蒂哥象只竖井的往复轮替的吊桶一般，头一冲，直掉进了那只海德堡
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