不停搅动猪肉，直到它全部变白为止。Stir the pork about until it turns white all the way through.她的手握得越来越紧，指节都变白了。Her knuckles whiten as she clenches her hands harder.头发变白并不一定等于变老了。Going grey is not necessarily synonymous with growing old....
这钻机有变速控制。The drill has variable speed control.该装置本身就在车子正下方，几乎与变速杆处于同一直线上。The device itself was right under the vehicle, almost in line with the gear lever.你拐角时要换挡变速.You have to shift as you drive around the corner....