英和和英

Challenge difficulties

to challenge hardships

challenge in turn

took up the gauntlet

challenge aggressively

a bold challenge

rise to a challenge

rise to a challenge

Rise to the challenge

to accept a challenge―take up the gauntlet―take up the glove

to accept a challenge―take up the gauntlet

a challenge

face tough challenges

to challenge a difficult problem

to face a challenge seriously

give the challenge

challenge

the challenge was formidable

insurmountable difficulties

issue a challenge to

the degree of difficulty

to solve a difficulty

to undergo hardships―go through hardships

a solution of the difficulty―a way out （of the difficulty）

a way out （of the difficulty）

an insurmountable difficulty

impressive difficulty

to escape a difficulty

hard to deal with

hard to deal with