杯头螺丝;当要调节手轮在机架上的位置时,先要松开此螺丝,以便固定手轮。
Cup head screws, When should adjust the handwheel on the frame, the first to loosen the screw so that fixed the handwheel.
他的右臂向头的一侧伸开,手上还紧紧握着一只咖啡杯。
His right arm was extended up beside his head, still holding on to a coffee cup.
三杯酒落肚,我的头开始发晕了。
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