核 n. nucleus; core; kernel; stone。v. check; verify;
当然 phr. of course; for sure; without a doubt; without
优哉游哉 idiom at ease; leisurely; carefree; unhurried; in
比重 n. specific gravity; proportion; specific weight。
漂 v. float; drift; ride; bleach; whiten; rinse; fail
制定 v. formulate; draft; make; lay down; draw up; enac
external adj. 外部的,外面的;对外的,与外国有关的;外来的,外聘的;(药品等类似物质
furnace n. 火炉,熔炉
executive adj. 行政的,有执行权的;高档的,豪华的;供主管人员使用的;(有关)经营管理
illustrate v. 加插图于;说明,阐明;证明,证实
lead seal liner hanger 铅封衬管悬挂器
噱头 adj. funny; catchy; eye-catching; amusing; comical
能 v. can; could; be able to; be capable of; have the
sometimes naive 有时候天真:形容某人在某些情况下缺乏经验或判断力,表现得过于天真幼稚。
成语 n. idiom; set phrase; phrase。