In drilling an oil well, mud is used to lubricate the cutting bit.钻油井时, 泥浆被用来润滑钻头.Lubricate adjuster screw threads and pivot with spray lube.使用喷雾润滑油润滑调整器螺丝螺纹和枢轴.You should lubricate the wheels of your bicycle once a mont...
Only direct speech should go inside inverted commas.只有直接引语应放在引号内。Change the direct speech of the following sentence into the indirect speech.把下列句中的直接引语改成间接引语.Change the following from direct speech into indirect speech.把...