A herbicide is a substance used to kill plants you do not want — weeds in a rice field, grass in the cracks of a path, plants that steal water from a crop. Farmers spray it; some gardeners keep a bottle for the driveway.

A herbicide is除草劑是 a substance用來殺死你不想要的植物 used to kill plants you do not want的一種物質 — weeds in a rice field像稻田裡的雜草, grass in the cracks of a path小路裂縫裡的雜草, plants that steal water from a crop或搶走作物水分的植物。Farmers spray it農夫會噴灑它; some gardeners keep a bottle有些園丁會留一瓶 for the driveway用來對付車道上的雜草。

The second half, -cide, means “killer,” the same idea as in pesticide. It is a practical word from farming, news, and science class, not from cooking.

The second half, -cide,後半段-cide means意思是「killer殺手」, the same idea as in pesticide跟pesticide（殺蟲劑）裡的意思一樣。It is a practical word這是個實用的字, from farming, news, and science class來自農業、新聞和自然課, not from cooking而不是來自烹飪。

Though actually the tidy word hides a range: some herbicides kill almost every green thing they touch; others are made to kill only certain kinds of plants and leave the crop standing. People also stretch it, fairly, to mean “anything used to kill plants,” even a strong salt water or vinegar mix at home.

Though actually不過事實上, the tidy word hides a range這個看似簡單的字底下其實有很多種類: some herbicides有些除草劑 kill almost every green thing they touch幾乎碰到什麼綠色的東西就殺死什麼; others are made to kill only certain kinds of plants另一些則設計成只殺特定種類的植物 and leave the crop standing而讓作物留下來。People also stretch it人們也會延伸使用它, fairly這樣說也算合理, to mean "anything used to kill plants"指「任何用來殺植物的東西」, even a strong salt water or vinegar mix at home甚至包括家裡用的濃鹽水或醋。

The school picture is usually a chemical in a spray tank.

The school picture學校教的典型印象 is usually通常是 a chemical in a spray tank噴桶裡的一種化學藥劑。