常: Ⅰ形容词1.(一般; 普通; 平常) ordinary; common; normal 短语和例子反常 unusual; abnormal; 人情之常 natural and normal; 习以为常 be used [accustomed] to sth.2.(不变的; 经常) constant; invariable 短语和例子冬夏常青 remain green thr
紧: Ⅰ形容词1.(物体受到几方面的拉力或压力以后呈现的紧张状态) taut; tight 短语和例子把绳子拉紧 pull the rope taut; 弓弦绷得很紧。 the bowstring is stretched taut.2.(物体受外力作用变得固定或牢固) fast; firm 短语和例子把螺丝拧紧 tighten the screw; 把门关紧 make the
