take advantage of; while; avail oneself of; when; now that

while

go to a country fair or market

(slang) to go to a flea market; to visit a street market; (phrasal verb) to join the fun

conveniently; without extra trouble

(adverb) conveniently; on the way; on one's way; at one's convenience; in passing; to do something else whilst one is at it (might as well…); (verb) catch this present opportunity or chance, …

take advantage of

while; avail oneself of;taking advantage of

lit. to strike while the iron is hot, meaning to get things done without delay

to take advantage; to seize an opportunity

loot a burning house, take adventage of sb.'s misfortune (lit., "to go to the market, to go to the fair")

to go to market

to loot a burning house; to take adventage of sb.'s misfortune

while it's not too late; while it's still early

take advantage of a situation; seize and capitalize on favorable circumstances

eat it while it's hot (Standard Chinese: 趁熱吃)

to eat the food while it's still hot

to do things together out of convenience; to do something whilst the timing is good; to act quickly while the opportunity is still available; to strike while the iron is hot

literally: 'to take advantage of the opportunity when the ground is soft enough to dig', an expression to curse someone to tell them to go and dig their own grave whilst the ground is still soft (i.e. they should take the chance now and go quickly to die), somewhat similar to the expression 'go to hell'; a more recent alternative interpretation to this phrase (used in a vulgar manner) is to tell someone to pack their bags and go whilst they have the chance

going somewhere popular nowadays (spoken)

to join in the fun; while one is in high spirits

to exploit an opportunity [colloquial]

taking advantage of someone when they are in a vulnerable situation; a cheap shot;

to exploit an opportunity [colloquial]