封: Ⅰ动词1.(封闭) close; seal 短语和例子查封 seal up; 密封 seal up completely; 大雪封山。 the mountains are covered over [closed up] with heavy snow.2.(封火) bank (a fire) 短语和例子炉子封了吗? have you banked up the fire?
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
