tea ash

例句：

1. 1. The tea leaves have been steepedin hot water for several hours.
   茶叶已经泡在热水里几个小时了。
2. 2. Teaash is a natural fertilizer thatcan be used to enrich the soil.
   茶渣是一种天然肥料，可以用来增加土壤的肥力。
3. 3. The tea ash fromthe teapot left on the stove overnighthad turned into a dark brown powder.
   茶壶放在炉子上过夜后留下的茶渣变成了深棕色的粉末。