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to echo one another (idiom)

(idiom) (of a call) to elict an enthusiastic response; to receive extensive approval

thoroughly (idiom)/completely/one and all/very clean

one move, two gains (idiom); two birds with one stone

lit. to drop a thousand zhang in one fall (idiom)/fig. (of business, popularity etc) to suffer a sudden, devastating decline/to take a dive

concentrating one's thoughts and efforts/single-minded/bent on/intently

lit. defeated, the ground blanketed with bodies (idiom)/fig. to suffer a crushing defeat

in deadly earnest; deadpan

(idiom) untainted by even a speck of dust; spotlessly clean; (of a person) honest; incorruptible

familiarity at first sight

lit. one arrow, two golden eagles (idiom)/to kill two birds with one stone

traceable to the same stock (idiom); of a common origin (of trends, ideas etc)

obvious at a glance (idiom)

lit. doesn't (even) enter a single aperture (of one's head)/I don't understand a word (idiom)/it's all Greek to me

to treat everyone equally favorably (idiom); not to discriminate between people

(idiom) immutable; impervious to change; set in stone

propitious wind throughout the journey (idiom)/plain sailing/to go smoothly/have a nice trip!

in a spurt of energy

see 一哄而散[yi1 hong1 er2 san4]

(idiom) just as in the past; as before; continuing as always

not one thread loose (idiom); strictly according to the rules/meticulous/not one hair out of place

hard to explain in a few words (idiom); complicated and not easy to express succinctly

(separated only by) a narrow strip of water

lit. one morning and one evening (idiom)/fig. in a short period of time/overnight

lit. to draw blood on the first prick (idiom)/fig. to hit the nail on the head

lit. to know one and understand half (idiom); a smattering of knowledge/dilettante/amateur