catch: implies the seizing of something that has been in motion or in flight or in hiding: ~ the dog as it ran by.     (seize抓住implies a sudden and forcible effort in getting hold of something tangible or intangible表示突然用力去抓住有形或无形的东西，如seized the crook as he tried to escape试图逃跑时突然用力抓住钩子, 如常说的to seize the opportunity抓住机遇，都强调突然和用力)


capture: suggests taking by overcoming resistance or difficulty: ~ an enemy stronghold.  要塞据点   如captured 90% of the market/a city/500 soldiers/the president of Venezuela占据市场份额/占领城市/俘虏士兵/韦总统


trap, snare, entrap, ensnare: imply seizing by some device that holds the one caught at the mercy of one's captor. trap and snare apply more commonly to physical seizing: ~ animals(trap); ~d butterflies with a net; entrap and ensnare more often are figurative: ~ped the witness with a trick question(entrap); a sting operation that ~d burglars(ensnare).     device泛指任何器件装置，特别是机械电子装置。工具也是一种器件device，这里译作工具   trap陷阱snare网


bag: implies success in seizing a difficult quarry by skill, stealth, or artifice, often with the suggestion of a hunter's craft: ~ged a brace of pheasants.           （artifice诡计奸计巧妙虚构  crafty机智巧妙)        习语in the bag表示十拿九稳探囊取物，如the election is in the bag大选十拿九稳，如the victory is in the bag稳操胜券


catch捕捉: 表示突然抓住正在跑动飞行隐藏的事物，capture捕捉: 强调克服抵抗，trap,snare,entrap,ensnare陷阱网罗: 都表示用工具捕捉，其中trap和snare表示实际捕捉，entrap和ensnare是比喻义，bag猎捕: 表示有猎人般的隐蔽巧妙机智


记忆方法: 1) 首字母CCTSB常常不上套<==捕捉不易

         2) 捕捉的意思是突然用力抓住占有控制mean to come to possess or control by or as if by seizing.首字母CCTSB常常不上套<==捕捉不易