难

difficult (to...) / problem / difficulty / difficult / not good

disaster / distress / to scold

(once) again / also / both... and... / and yet / (used for emphasis) anyway

short-tailed bird

to rise in revolt / to raise difficult questions

to feel embarrassed / to feel awkward

hard to understand / difficult to deal with / knotty / complicated

lit. to sound out the difficulties and retreat to avoid defeat (idiom) / fig. to back out of an awkward situation; to get out on finding out what it's really like

to sound out the difficulties and retreat to avoid defeat (idiom); fig. to back out of an awkward situation / to get out on finding out what it's really like

to be daunted by challenges

You can lead a horse to water, but you can't make him drink. (idiom)

(a line from a poem by the Tang poet Liu Yuxi 劉禹錫|刘禹锡[Liu2 Yu3 xi1]) one gains very little insight into one's enemy from a hundred victories, but he who breaks his arm three times will be a good doctor / (fig.) one learns more from one's failures than from one's successes

to put up innumerable obstacles / to create all kinds of difficulties (idiom)

to find sth increasingly difficult

hard to distinguish real from imitation

it's difficult to please everyone (idiom)

(idiom) one cannot afford to incur public wrath / it is dangerous to incur the anger of the masses

easy to grasp but difficult to put into practice (idiom) / easier said than done

(idiom) to put up innumerable obstacles; to create all kinds of difficulties

it is easy to go from frugality to extravagance; the reverse is not so easy (idiom)

to make sth difficult / to create obstacles

knotty problem / intractable difficulty

trouble shooting / solution to difficulties

dubious or hard-to-treat cases (medicine) / hard cases