"constituir un reto para" in English

to form- to present- to incorporate- to constitute- to establish- to set up- to account for- to make up- to name- to represent

oneone

a- some

a- an

challenge- telling-off- dare- dressing-down- scolding

to call on- to scold- to dare- to bawl out- to blow up- to dress down- to get after- to get on at- to lay into- to pull up- to tell off- to tick off- to carpet- to chew out- to challenge

to come

for- to- by

to

to draw up- to break- to break off- to flag down- to halt- to kill- to let up- to parry- to pull in- to pull over- to pull up- to quit- to rein in- to stall- to stem- to stop over- to tie up- v + adv- to cock- to perk up- to prick- to prick up- to stop out- to upend- to stop- to block- to save- to block- to ward off- to stanch- to staunch- to stand- to stand … up- to switch off- to leave off- to stay- to hang out- to go on strike

to give birth- to foal- to whelp- to calve- to drop- to farrow- to lamb- to pup- to throw- to litter- to bear- to have- to bear- to have- to have a baby