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vt (1) 1)抓(抱，咬)住(take a firm hold on sb/sth with one's hand(s)，fingers，arm(s)，teeth，etc)[T+n]：～a thief/a letter 抓住小偷/信;～the rope with both hands 用雙手抓緊繩子;～sb firm(ly) by the hand/arm緊緊地抓住某人的手/胳膊;～sb's hand warmly 熱情地握住某人的手;〖同〗 seize，snatch，catch;〖反〗 release，free; 2)利用，抓住(make (the best) use of (sth，esp a chance，an opportunity，etc))[T+n](fig)：～an opportunity/one's chances 抓住一個(gè)機(jī)會/自己的機(jī)會;

(2)掌握，領(lǐng)會，理解(understand fully (sth，esp sth said，a meaning，etc))[T+n，T+wh，T+wh-inf]：～sb's argument/sb's meaning領(lǐng)會某人的論點(diǎn)/意思;～present-day scientific theories掌握當(dāng)今的科學(xué)理論;～what sb/the reply meant 領(lǐng)會某人所指/這個(gè)答復(fù)的含義;He never could～how to use the instrument. 他始終弄不明白怎么使用這臺儀器?！挤础絤isunderstand;

grasp at (v prep)設(shè)法抓住(vt)：～at a branch/some straws with both bands 用雙手抓住一根樹枝/一些稻草;～at an opportunity 設(shè)法抓住一個(gè)機(jī)會;

n(1) 1)抓(抱，咬)住(firm hold or grip using one's hand(s)， fingers，arm(s)，teeth，etc)[U，a～]：keep sb's hand/take sb/hold a child tightly in one's～緊緊抓住某人的手/某人/緊緊抱著孩子;wriggle out of sb's～掙脫開某人的緊抱;get a good～on the rope 緊緊抓住繩子;take a firm～of the handle 緊緊抓住把手;have a powerful～強(qiáng)有力地握住; 2)控制(力)(control)[U，a～](fig)：in the～of powerful emotions/a dictator陷入強(qiáng)烈的情感之中/處于獨(dú)裁者的掌握之中;have a thing within one's～使一件事處于自己力量所及的范圍內(nèi);(sb/sth) be beyond the～of sb 某人抓不到某人/物;free the country from the～of the enemy 把國家從敵人的控制下解放出來;

(2)掌握，領(lǐng)悟，理解(understanding)[U，a～]：have a good/sound/thorough～of English history/tactics/the situation 對英國歷史/戰(zhàn)術(shù)/局勢了如指掌/充分了解/徹底了解;(whole lecture/sb's idea) be within/beyond one's～(整個(gè)講座/某人的想法)自己能/不能理解;improve the students'～of algebra 提高學(xué)生對代數(shù)的理解力;a vague intuitive～of the meaning of greatness in literature 對文學(xué)的偉大意義很模糊的了解;

【辨異】grasp 與catch、seize 和clutch 的區(qū)別見CATCH。