tread water
成語所屬單字water
tread water — 慣用語
1. To keep yourself in the same place in deep water by moving your arms and legs.
1.慣用語
釋義
踩水
To keep yourself in the same place in deep water by moving your arms and legs.
例句
She learned to tread water in swimming class.
He treaded water while waiting for the boat.