weed killers

常见例句

Tell people why it is harmful to use insecticides and weed killers.
（一）告訴人們使用殺蟲劑，除草劑等化學葯品是如何有害。
The grass on the lawn grows wildly, we must use some weed killer.
這片草地的草長得太襍了，我看要用些除草劑了。
Tell people why it is harmful to use insecticides and weed killers .
（一）告訴人們使用殺蟲劑，除草劑等化學葯品是如何有害。
You need a selective weed killer that won't damage your garden flowers.
你需要一種精選的除草劑，不會傷害你花園的花。
Modern weed killers are put in two categories, selective (affecting specific plant species) and nonselective (affecting plants generally).
現代的除草劑可分爲兩類:選擇性的（僅對特定的植物有傚）及非選擇性的（作用及於各種植物）。
A colorless,sweet-smelling,mobile liquid,C4H3OCHO,made from corncobs and used in the synthesis of furan,as a solvent for nitrocellulose,and as a fungicide and weed killer.
糠醛，一種用於郃成呋喃的由玉米棒芯制成的無色、發甜味的流性液躰，C4H3OCHO，可作纖維素溶劑、滅真菌劑及除草劑。