creep up on
US /kriːp ʌp ɑːn/
UK /kriːp ʌp ɑːn/
1.
悄悄靠近, 不知不觉地发生
to approach someone or something slowly and quietly so as not to be noticed
:
•
The cat tried to creep up on the bird.
猫试图悄悄靠近那只鸟。
•
Don't let problems creep up on you; address them early.
不要让问题悄悄出现；及早解决它们。