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

打草惊蛇act rashly and alert the enemy

大材小用waste one's talent on a petty job

大公无私selfless

大海捞针look for a needle in a bottle of hay

大惑不解be extremely puzzled

大惊小怪a storm in a teacup foofaraw fuss like a hen with one chicken

大惊小怪的spoffish

大快人心affording general satisfaction

大名鼎鼎famous well known

大器晚成great minds mature slowly

大千世界the boundless universe

大失所望greatly disappointed

大同小异largely identical but with minor differences

大显身手大显神通strut one's stuff

大言不惭夸夸其谈fanfaronade rodomontade

大义凛然inspiring awe by upholding justice

大义灭亲place righteousness above family loyalty

大智若愚Still waters run deep. An empty vessel makes the most sound Still water runs deep

呆若木鸡dumbstruck transfixed

待人接物the ways one gets along with others

殚思极虑rack one's brains

胆小如鼠cannot say boh to a goose

胆战心惊的funky

淡泊明志not seek fame and wealth

道貌岸然be sanctimonious

得过且过drift along muddle along

得天独厚的advantaged

得心应手handy with facility

得意忘形得意洋洋bloat get dizzy with success

得意洋洋elated elation exaltation jauntiness

得意扬扬ride high

得意洋洋的cock-a-hoop high-blown perky

得意扬扬的triumphant