如何使用 "weed" 造句

1. Bill curran is a professor of weed science at penn state .
比尔柯伦(billcurran)是宾夕法尼亚州立大学的杂草科学教授。
2. Weed scientists are urging farmers to alternate glyphosate with other herbicides .
杂草学家们正在督促农民去用其他的除草剂来替代草甘膦。
3. Will you help me weed the garden ?
你能帮我给花园除草吗?
4. Striga is a parasitic weed that africans commonly call witchweed .
striga是一种寄生野草,非洲人通常称其为独脚金。
5. A weed is any a plant growing where you don 't want it .
杂草,就是生长在你不希望看见它们的地方的植物。