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| breakthrough | 
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| n.  (突破,衝破防線,突破性的發現) act of overcoming or penetrating an obstacle or restriction | 
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| breed | 
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| v. Syn. raise; hatch; mate (養育,繁殖) raise; produce offspring; give birth to or hatch; mate | 
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| brew | 
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| v. Syn. boil; cook (釀造,醞釀,孕育) boil or seethe; cook; be in a state of preparation; be mixing, forming, or gathering | 
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| brink | 
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| n. Syn. verge; border ((峭壁的)邊沿,邊緣) edge, margin, or border of a steep place verge | 
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| brisk | 
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| a. Syn. energetic; swift (活潑的,輕快的) marked by speed, liveliness, and vigor; energetic; swift; keen or sharp in speech or manner | 
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| bruise | 
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| v.  (傷痕,擦傷,瘀傷,擦傷) injure, as by a blow or collision; contuse; fight with the fists | 
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| buckle | 
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| v. Syn. fold; fasten; distort (皮帶扣環,鎖扣,扣環) fold or collapse; bend out of shape, as under pressure or from heat | 
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| buffet | 
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| n.  (自助餐) table with food set out for people to serve themselves; meal at which people help themselves to food that's been set out | 
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| bulb | 
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| n.  (球莖,球狀物) rounded part of a cylindrical structure; electric lamp consisting of a glass ball | 
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| bulletin | 
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| n.  (公告,告示,公報,新聞簡報) brief statement of facts; any public notice or announcement; a periodical publication | 
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| bumper | 
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| n.  ((汽車前後的)保險桿) something as bars at edges to absorb shock and prevent serious damage |