播前除草——用氟乐灵(trifluralin) ,其商品名为特福力(Treflan)或氟特力(Flutrix)的48％乳油在播前施，施后耙匀以防治玉米的一年生禾本科杂草及部分阔叶杂草。
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图书出版商默默地希望苹果公司进入电子图书市场会有助于减弱亚马逊的影响力：据福里斯特研究公司调查，Kindle拥有60%的电子图书市场份额。
Book publishers are quietly hoping that Apple's entry into e-books will help to reduce the clout of Amazon: the Kindle has 60% of the e-reader market, according to Forrester, a research firm.
此项研究的局限性主要在于缺乏福莫特罗单纯治疗组和对于决定的依从性的无能为力。
Limitations of this study include lack of a formoterol therapy-alone treatment group and inability to determine compliance.
搜寻人员目前把注意力集中在福塞特上星期一起飞的小机场方圆80公里的内的地区。
Searchers are now concentrating on an area within 80 kilometers of the airstrip where Fossett took off last Monday.
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