take a hint
Vicky dropped a hint to Tom that she likes him. 薇琪給湯姆一個暗示，蜻蜓點水...
Enter a hint to remind you of your secret key Select hint : What ...
Suppose you don't know the answer;the examiner gives you a hint. Your idea and point could write a good paper. The examiner hinted that you'd get a pass;no need to use two hints.