2018年托福备考必背高频词汇(十八)
511. fertile= reproductive a. 肥沃的;多产的
512. fertile= productive a. 肥沃的;多产的
513. figure out =map(详细规划) phr. 计算出;解决
514. finding= discovery n. 发现
515. first and foremost =above all phr. 首先; 首要地
516. flake =fragment n. 小薄片
517. flattery= praise n. 恭维
518. flee= run away from v. 逃走
519. flexible= adaptable a. 易适应的
520. float= stay on the top v. 漂浮
521. float =upward rise phrv. 浮起
522. flourish =prosper v. 繁荣;兴旺
523. flourish= thrive v. 繁荣;兴旺
524. flourishing= prosperous a. 繁荣的
525. flow= movement n. 流动
526. fluctuate= change v. 变动
527. fluctuation= variation n. 变动;起伏
528. focal= point centre area n. 焦点
529. follow= track v. 跟随
530. for instance= for example phr. 例如
531. forage= feed n. 饲料
532. forage =search for food v. 觅食
533. formidable =excessive a. 巨大的
534. foster= encourage v. 鼓励
535. foster= urge v. 培养;促进
536. foster =promote the development of v.培养;促进
537. foul= pollute v. 污染
538. fragment= break up v. 使成碎片
539. fragmentation= break n. 破裂
540. fragmentize= break up v. 使成碎片