不义之财filthy lucre filthy pelf the mammon of unrighteousness

不亦乐乎extremely

不远千里go to the trouble of travelling a long distance

不约而同happen to coincide

不择手段by any kind of means by hook or crook play hard by fair means or foul

不知所措be at a loss be all adrift lose one's head out of one's wits

才疏学浅have little talent and learning

惨绝人寰extremely cruel

沧海桑田time brings a great change to the worlds

沧海一粟/九牛一毛a drop in the bucket

草木皆兵a state of extreme nervousness

层出不穷emerge in endlessly

层峦迭嶂peaks over peaks

察言观色carefully watch what sb. is doing and saying

姹紫嫣红very beautiful flowers

畅行无阻checkless

车水马龙heavy traffic

沉默寡言taciturnity

称心如意well-content

趁热打铁strike while iron is hot Hold a wolf the iron is hot

成群结队gang horde

诚惶诚恐with reverence and awe

诚心诚意sincere desire

承上启下a connecting link between the preceding and the following

吃苦耐劳tough

吃里扒外live on sb. while helping others secretly

痴心妄想 胡思乱想wishful thinking

持之以恒preserve

叱咤风云ride the whirlwind

愁眉苦脸pull a long face snoot

愁眉苦脸的，愁眉苦脸地woebegone morosely

臭名远扬，臭名昭著flagrancy， notorious

出乎意料unexpected

出口成章have an outstanding eloquence

出类拔萃，鹤立鸡群fill the bill supereminence

出谋划策give counsel suggest

出奇制胜defeat sb. by a surprise action

出生入死go through fire and water

触类旁通comprehend by analogy

垂头丧气，无精打采 down in the mouth lose one's spirits with the tail between the legs

垂头丧气的blue about the gills crestfallen downhearted

绰绰有余more than sufficient

此起彼伏as one falls,another rises

从容不迫go easy take one's time

从容不迫的leisured unhurried

从容不迫地by easy stages

粗枝大叶careless slapdash sloppy

粗枝大叶的broad-brush

措手不及unaware unprepared

错综复杂 扑朔迷离 anfractuosity

错综复杂的anfractuous daedal reticula sinuous