watch out for提防、戒备、密切注意……
watch over看守、监视……
wave sb．on／away挥手叫某人前进或走开
wave to向……挥手等致意
wear away使……受到磨损、磨灭
wear down使……损耗、磨损等；使…… 筋疲力尽
wear off逐渐减弱；使……擦去
wear out使……疲乏；把……穿破；使……减弱
wear sth．to把……穿得到……程度
weep at对……哭泣
