| 1. | Many insects use crucifers as hosts .
许多昆虫以十字花科植物为寄主。 |
| 2. | They contribute to the plant's own demise .
它们就能使植物自身死亡。 |
| 3. | Ethylene is a growth hormone in plants .
乙烯是植物中一种生长荷尔蒙。 |
| 4. | Tropical plants thrive in a greenhouse .
热带植物在温室里茁壮生长。 |
| 5. | The pigs were grubbing around for roots .
猪在到处拱土找植物根吃。 |
| 6. | This book is about chemicals and plants .
本书所写的是化学药剂和植物。 |
| 7. | Shade plants have the opposite characters .
阴生植物却具有相反的性状。 |
| 8. | The new buds begin to appear in the spring ..
春天植物开始吐新芽。 |
| 9. | These plants were distributed into 22 classes .
这些植物分为22类。 |
| 10. | Amines are widely distributed in plants .
在植物中胺是广泛分布的。 |
