间隔: interval; space; spacing; blanking; blank; region; distance; gap; intermission 短语和例子留间隔 space out; 间隔五米 an interval of five metres; 有一天时间的间隔 with an interval of one day; 没有间隔 without inter
叠: Ⅰ动词1.(一层加上一层; 重复) pile up; repeat 短语和例子层峦叠嶂 peaks rising one higher than another; 一个一个往上叠 pile one above another2.(折叠) fold 短语和例子把信叠好 fold the letter; 叠被子 fold up a quilt; 这些轻便折椅可以叠起来放进汽车。
