skate on thin ice

a double-edged sword a guinea pig a hostage to fortune a house of cards at-risk be easy meat be headed for a fall be heading for a fall be in the firing line be in the front line be on the firing line be on the line be open to abuse dangerous dicey

الخطر والمجازفة والتهديد التعريض للخطر والمقامرة والمجازفة