Some took care of the flowers and bushes, and persuaded people to keep off the grass.

一些人照看鲜花和灌木，劝人们不要践踏草坪。

youdao

Some kinds of fish will keep lakes and water-ways clear by eating water weeds. the Chinese grass carp is one. it eats large amounts of water milfoil and other weeds that grow under the water surface.

有些鱼类能吃掉杂草从而保持湖塘、水道的清洁。中国草鱼即是一例，它能吃掉大量狐尾草之类的长在水面下的杂草。

youdao

From every little bit, make the decapitation of flowers and plants, never never keep off the grass.

从一点一滴做起，从不乱摘花草，从不践踏草坪开始。

youdao

Gotta get America's version of the Berlin Wall built along the Rio Grande to keep Mexicans out of our fish-cleaning factories and grass-cutting jobs.

WSJ: Henninger: Generation Lost

Keep the grass cut and lights on is the motto of the program.

NPR: An Achilles' Heel In Charlotte's Housing Market

He played semi-pro football on Pittsburgh fields so devoid of grass they were sprayed with oil to keep the dust from rising.

BBC: How pro football hooked America