water pipes are often

water pipes are often 基本解释

水管通常

重点词汇

water n. 水；雨水；海水；海域 v. 给…浇水；供以水；加水稀释；流泪

pipes n. 小管（一种通心粉制品）；管子( pipe的名词复数 )；烟斗；管乐器；（管风琴的）音管

often adv. 常常；经常；时常；再三