false move
noun/ˌfɔːls ˈmuːv/
/ˌfɔːls ˈmuːv/
[usually singular]- an action that is not allowed or not recommended and that may cause a bad result
（可能引起不良后果的）不允行为，不明智行动 - One false move and the bomb might blow up.
一步弄错，炸弹就可能会爆炸。
- One false move and the bomb might blow up.