acid test

BrE

/ˌæsɪd ˈtest/

NAmE

/ˌæsɪd ˈtest/

(

also ˈlitmus test

especially in NAmE

)

noun

[singular]

a way of deciding whether sth is successful or true 决定性考验；严峻的考验

◆The acid test of a good driver is whether he or she remains calm in an emergency. 在紧急情况下能否保持冷静是对好司机的严峻考验。