In a minute Jimmy's pet drill was biting smoothly into the steel door.
不一会儿，吉来心爱的钻头已顺利钻进了钢门。
In a minute Jimmy's pet drill was biting smoothly into the steel door.
不一会儿，吉米心爱的钻头已顺利钻进了钢门。
Spiral drill : steel blades, drill, wear resistance.
螺旋钻头：铸钢叶片，钻尖，耐磨。
Spiral drill : steel blades, drill, wear resistance.
螺旋钻头：铸钢叶片，钻尖，耐磨。
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