One must choose between them.

人们必须二者选一。

youdao

There always comes a time when one must choose between contemplation and action.

人们必须必须在思考和行动之间做出选择，这一刻总会到来。

youdao

For those who have the possibility of ascension, one must choose to ascend.

对那些有可能提升者，你必须选择提升。

youdao

Plato seems to believe that each of us must choose somehow, must choose between one or the other of these two contenders for the most serious and worthwhile way of life.

柏拉图似乎相信,我们每个人都应选择，必需在这两种竞争概念中,做出选择,以求得严谨及值得过的人生。

耶鲁公开课 - 政治哲学导论课程节选

It also says "the circumstances or factors of suspicion must be elaborated on...." To cite one example, if officers choose "furtive movements" as the determining factor, they must also provide a written description of the "movement, " the memo states.

WSJ: Stop-and-Frisk at Issue

It must have been really difficult to choose one of the artists but I'm really happy.

BBC: Ahtila describes her installations as 'human dramas'