Systemic pesticides have become popular but the concept of making the entire plant toxic creates personal exposure problems beyond what many growers consider safe.
内吸式杀虫剂最近很流行，但让整株植物变得有毒会让养殖者也暴露在化学农药中，很多养殖者会觉得不安全。
2
The slightly elevated levels of aminotransferases may reflect an early toxic effect of methotrexate on the liver, although a nonspecific response to a systemic infection is also possible.
转氨酶水平轻微升高可能反映了甲氨蝶呤对肝脏的早期毒性作用，尽管也可能是全身感染引起的非特异性反应。
3
This thesis overview the systemictoxic effects of lead, including the toxic effects on nervous system, cardiovascular system, urinary system, reproductive system and the development.