weed killers

常見例句

• 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(xué)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(zhǎng)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(xué)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(huì)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(xiàn)代的除草劑可分爲(wèi)兩類:選擇性的（僅對(duì)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(fā)甜味的流性液躰，C4H3OCHO，可作纖維素溶劑、滅真菌劑及除草劑。
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