to move up and down / to undulate / ups and downs

to hide / to cover up / to conceal

surname Fu

to lean over / to fall (go down) / to hide (in ambush) / to conceal oneself / to lie low / hottest days of summer / to submit / to concede defeat / to overcome / to subdue / volt

kilovolt

to ambush / to lie in wait for / to lie low / ambush

up here, down there (idiom); to rise and fall in succession / no sooner one subsides, the next arises / repeating continuously / occurring again and again (of applause, fires, waves, protests, conflicts, uprisings etc)

the third of the three annual periods of hot weather (三伏), which typically runs over the middle ten days of August

hibernation / living in seclusion

the three annual periods of hot weather, namely 初伏, 中伏 and 末伏, which run consecutively over a period from mid-July to late August

danger lurks on every side (idiom)

the second of the three annual periods of hot weather (三伏), which begins in late July and lasts either 10 or 20 days, depending on the Chinese calendar in that year

to be ambushed

the first of the three annual periods of hot weather (三伏), which typically begins in mid-July and lasts 10 days

to curl up / to lie with knees drawn up / to huddle up

Ambush from Ten Sides (pipa solo piece) / House of Flying Daggers (2004 movie by Zhang Yimou 張藝謀｜张艺谋)

to overpower / to overwhelm / to subdue / to check / to control

(of cereal crops) to collapse and lie flat

to prepare an ambush / to waylay

one climax follows another (of thrilling story)

to lie prostrate

see 初伏

to mark the start of the hottest period of the year, known as 三伏天

to hide / to lie low

to subdue / to vanquish / to tame

to come to the end of the hottest period of the year (known as 三伏)

to crouch low and bend forward (esp. in hiding or in wait)

to pacify / to calm / calm / quiet / to lie on one's belly

thoughts surging in one's mind (idiom) / different thoughts coming to mind

to crouch / to lie prone

variant of 壓服｜压服

to crouch (of animal)

tribe of the Xianbei 鮮卑｜鲜卑 nomadic people

中伏

mega electron volt (MeV) (unit of energy equal to 1.6 x 10⁻¹³ joules)

photovoltaic (e.g. cell)

to crouch / to crawl / to creep

giga electron volt GeV (unit of energy equal to 1.6 x 10⁻¹⁰ joules)

to travel at night and lie low by day (idiom)

to lie in wait / to ambush / to conceal sth

variant of 收服

to obey / faithfully following instructions / to admit guilt

electron volt (unit of energy used in particle physics, approximately 10⁻¹⁹ joules)