脚下，却往早就瞄准的一颗小石粒踢去。

Foot, but hit toward a stone grain that early takes aim by.

youdao

用着一把“汤纳u –15 ”刮锄器。 一定要刮到齿石粒的下面， 然后往上刮。

Use a Towner U-15 scaler here. Be sure to reach under the particle of calculus and scrape upward.

youdao

可见，土壤是石粒和曾经是活体的物质的混合物。表土中这种曾是活体的东西叫做“腐殖质”。

SO the topSOil is bits of rock mixed with things that are once alive. These things in the topSOil that were once alive are called humus.

youdao