exist v. 生存，生活，繼續(xù)存在
例句：He can hardly exist on the wage he gets; there is no money for luxuries.
他靠他掙的工資簡直難以生存，根本無錢享受。

existence n. 存在，實(shí)在物
例句：Pollution poses a threat to the continued existence of these species.
污染對(duì)這一物種的繼續(xù)生存造成了威脅。

extinct adj. 滅絕的，耗盡的
例句：Dinosaurs have been extinct for millions of years.
恐龍已絕種幾百萬年了。

extinguish vt. 熄滅，消失，壓制
例句：Nothing could extinguish his faith in human nature.
沒有什么能使他熄滅對(duì)人性的信心。

quench vt. 結(jié)束，熄滅，淬火 vi. 熄滅，平息
例句：Having a bottle of soft drink is not enough to quench his thirst.
對(duì)他來說，喝一瓶汽水不夠解渴。

instinct n. 本能
例句：It's a mother's instinct to protect her baby.
保護(hù)自己的孩子是作為母親的一個(gè)本能。

intuition n. 直覺，直覺的知識(shí)
例句：She bad an intuition that there was something wrong.
她憑直覺知道有些地方不對(duì)勁。

tuition n. 學(xué)費(fèi)
例句：He pays for her board and lodging, while his uncle finds her in tuition.
她自己負(fù)責(zé)膳宿，她叔叔供給她學(xué)費(fèi)。

intrinsic adj. 內(nèi)在的，本質(zhì)的。
例句：My daughter has a natural and intrinsic talent and skill.
我女兒天生就具備內(nèi)在的天賦和才能。