adj. 根本的，基本的，激进的，彻底的，[植]根生的；n. 激进分子，根基，原子团，[数学]根数；
lass="s-r-b">[例句] The country needs a period of calm without more surges of radical change...
lass="s-r-b">[例句] The Football League has announced its proposals for a radical reform of the way football is run in England.
n. 碗，一碗东西，碗状物，[体]木球；vi. 参加保龄球赛，[体]投球，[体]玩滚木球，稳而快地行驶；vt. 投掷或滚动（球），滚球得分，表演保龄球，打倒，撞击；
lass="s-r-b">[例句] Put all the ingredients into a large bowl...
lass="s-r-b">[例句] Your dog should have his own bowls for food and water.
n. 自由，许可权，放肆，无礼，解放，释放；
lass="s-r-b">[例句] Wit Wolzek claimed the legislation could impinge on privacy, self determination and respect for religious liberty...
lass="s-r-b">[例句] Such a system would be a fundamental blow to the rights and liberties of the English people.
n. 嘴唇，（杯，壶等的）口，边缘，〈俚〉无理的回答，〈美〉律师；adj. 唇的，口头上的，唇音的；vt. 用嘴唇接触，接吻，〈俚〉轻轻地说，唱，把高尔夫球打到穴边而未进去；
lass="s-r-b">[例句] Wade stuck the cigarette between his lips.
lass="s-r-b">[例句] ...the lip of the jug.
adj. 正常的，正规的，标准的，[数学]正交的，精神健全的；n. 正常，常态，标准，[数学]法线；
lass="s-r-b">[例句] He has occasional injections to maintain his good health but otherwise he lives a normal life...
lass="s-r-b">[例句] The two countries resumed normal diplomatic relations...
n. 蕾丝，透孔织品，鞋带，系带；vt. 给（书、讲话等）润色，给（饮料等）掺（少量的酒、药、毒药等），给（鞋、靴等）穿鞋带，使编织（或交织、缠绕）在一起；vi. 以系带系紧；
lass="s-r-b">[例句] She finally found the perfect gown, a beautiful creation trimmed with lace.
lass="s-r-b">[例句] ...a plain white lace bedspread.
n. 叶子，页，叶状的结构，金属薄片；vt.& vi. 翻书（报）；vi. 生叶；
lass="s-r-b">[例句] In the garden, the leaves of the horse chestnut had already fallen...
lass="s-r-b">[例句] The Japanese maple that stands across the drive had just come into leaf.
adj. 致命的，不共戴天的，终有一死的，极度的；n. 凡人，人类；
lass="s-r-b">[例句] A man is deliberately designed to be mortal. He grows, he ages, and he dies.
lass="s-r-b">[例句] Tickets seem unobtainable to the ordinary mortal.
adj. 最重要的，主要的，资本的，本金的；n. 校长，主要演员，主角，[法]委托人，当事人，本金；
lass="s-r-b">[例句] The principal reason for my change of mind is this.
lass="s-r-b">[例句] ...the country's principal source of foreign exchange earnings...
vt. 取消，注销，抵消，偿还，〈数〉约去；vi. 抵消，中
lass="s-r-b">[例句] The Russian foreign minister yesterday cancelled his visit to Washington...
lass="s-r-b">[例句] Many trains have been cancelled and a limited service is operating on other lines...
adj. 中央的，中心的，重要的，核心的；n. 电话总局，电话转接员；
lass="s-r-b">[例句] ...Central America's Caribbean coast...
lass="s-r-b">[例句] The disruption has now spread and is affecting a large part of central Liberia.
n. 贷款，借款，借用；vt. 借，借给；vi. 借出；
lass="s-r-b">[例句] The country has no access to foreign loans or financial aid...
lass="s-r-b">[例句] The president wants to make it easier for small businesses to get bank loans.
vt. 解开或使松，放宽，放松，使（肠）通畅；vi. 变松或变得更松；
lass="s-r-b">[例句] Many business groups have been pressing the Federal Reserve to loosen interest rates...
lass="s-r-b">[例句] Drilling regulations, too, have been loosened to speed the development of the fields.
n. 桶，一桶之量，圆筒，活塞筒，滚筒，圆筒；adj. 桶状的；vt. 装进桶里，放进桶
lass="s-r-b">[例句] The wine is aged for almost a year in oak barrels.
lass="s-r-b">[例句] ...barrels of pickled fish.
n. 操练，钻头，军事训练，（应对紧急情况的）演习；vt.& vi. 钻（孔），打（眼），操练，训练；vt. 作…演习，操练；
lass="s-r-b">[例句] ...pneumatic drills.
lass="s-r-b">[例句] ...a dentist's drill.
n. 清单，目录，倾斜，布边，布头，狭条；vt. 列出，列入，把…编列成表，记入名单内；vi. 列于表上；
lass="s-r-b">[例句] We are making a list of the top ten men we would not want to be married to...
lass="s-r-b">[例句] There were six names on the list.
vt. 击退，使厌恶，抵制，使不愉快；
lass="s-r-b">[例句] They have fifty thousand troops along the border ready to repel any attack.
lass="s-r-b">[例句] Like poles repel, unlike poles attract...
adj. 最低的，最底下的，最小的；
lass="s-r-b">[例句] ...the low garden wall that separated the front garden from next door...
lass="s-r-b">[例句] She put it down on the low table...
adj. 神智清楚的，理性的，理智的，合理的；n. 合理的事物，[数]有理数，懂道理的人，人类，〈英〉合理的服装；
lass="s-r-b">[例句] He's asking you to look at both sides of the case and come to a rational decision...
lass="s-r-b">[例句] Mary was able to short-circuit her stress response by keeping her thoughts calm and rational.
vi. 漏出，透露，（指消息，秘密等）泄密，漏电，漏水；vt. 使泄露， 擅自公开；n. 泄漏，漏洞，裂缝，漏出物，（俚语）撒尿；
lass="s-r-b">[例句] The roof leaked...
lass="s-r-b">[例句] The gas had apparently leaked from a cylinder...