Ground roller
（水流的）底部旋滚
🧩 词语组成解析
ground
[ɡraʊnd]
n. 地面，土地;基础;范围;阵地，战场;
vi. 搁浅，停飞;着陆;
vt. 把…放在地上;在…的基础树立上;交给…基本知识;使…受初步训练;
v. grind的过去式和过去分词;
🗣️ 情景例句
Let me give you a little fatherly advice.
让我像父亲般给你提点建议。
He that will take the bird must not scare it.
欲捉鸟莫惊鸟。
Although mankind has undergone no general improvement in intelligence or morality, it has made extraordinary progress in the accumulation of knowledge.
虽然人类有智力和道德上没有得到普遍提高，但在知识积累方面却取得了巨大的进步。