| 词汇 | keep sb on their toes |
| 释义 | ● keep sb on their ˈtoes to make sure that sb is ready to deal with anything that might happen by doing things that they are not expecting （通过出其不意的行动）使保持警觉◆ Surprise visits help to keep the staff on their toes . 突击巡察有助于使员工不致懈怠偷懒。See also toe |
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