植物

• Many insects use crucifers as hosts .
  许多昆虫以十字花科植物为寄主。
• They contribute to the plant's own demise .
  它们就能使植物自身死亡。
• Ethylene is a growth hormone in plants .
  乙烯是植物中一种生长荷尔蒙。
• Tropical plants thrive in a greenhouse .
  热带植物在温室里茁壮生长。
• The pigs were grubbing around for roots .
  猪在到处拱土找植物根吃。
• This book is about chemicals and plants .
  本书所写的是化学药剂和植物。
• Shade plants have the opposite characters .
  阴生植物却具有相反的性状。
• The new buds begin to appear in the spring ..
  春天植物开始吐新芽。
• These plants were distributed into 22 classes .
  这些植物分为22类。
• Amines are widely distributed in plants .
  在植物中胺是广泛分布的。