The first essential in elephant training is to assign to the animal a single mahout who will be entirely responsible for the job.
馴象中至關重要的是指派一名專門的馴象員，全面負責這項工作。
新概念英語第四冊
Lesson 41 Training elephants
?? 句中詞匯解析
從本句中提取的重要詞匯
adj. 基本的;必要的;本質的;精華的;
n. 必需品;基本要素;必不可少的東西;
?? essent=be存在，本質 + ial ...的 → 必要的，本質的
"The essential thing is that the two of you ought to agree."
根本的問題是你們倆應意見一致.
近義：must, necessity, proviso, requirement, requisite, condition
反義：nonissue, needless, pointless, profitless, purposeless, redundant
vt. 分派，選派，分配;歸于，歸屬;[法律] 把（財產，權利、利息）從一人轉讓給另一人;把…編制;
n. [常用復數][法律]受讓人，接受財產等轉讓的人，受托者;
?? as一再+sign記號→不斷給人標記號→指定；分配
"It is possible to assign an exact date to this building."
這座建筑物的確切年代是可以確定的.
近義：apply, appoint, apportion, appropriate, mete, dedicate
n. 動物，獸，牲畜;<俚>家畜，牲口;<俚>畜生（一般的人）;獸性;
adj. 動物的;肉體的;肉欲的;
?? anim生命，精神+al名詞后綴→有生命的東西→動物
"I have an allergy to animal hair."
我對動物毛過敏。
近義：beast, crittur, creature, critter, physical, beastly
反義：vegetal
adv. 完全地;完整地;全部地;徹底地;
?? ex-, e-, ef- 前綴;表示在……外面,從……來;向上的;完整的;剝奪
"He was actuated entirely by malice."
他完全是出于惡意。
近義：absolutely, off, outright, plumb, positively, quite
反義：insufficiently, scarcely, scrappily, skimpily, truncately, unexhaustively
adj. 盡責的;承擔責任;負有責任的;懂道理的;
?? respons=response回應+ible能...的→能回應的→負責任的
"the manager who is largely responsible for the team's victory"
對該隊獲勝起主要作用的教練
近義：occasioning, reliable, sedate, serious, staid, sure
反義：undependable, untrustworthy, feckless