业余无线电爱好者经常使用连续波模式进行远距离通讯。

Amateur radio operators often use ___CW for long-distance communication.

这批货物的价格是按照毛重计算的。

The price of these goods is calculated based on ___C.W..

请顺时针方向拧紧螺丝。

Please tighten the screw by turning it ___clockwise.