不及物动词

1. 飞去来器，回力镖（澳大利亚土著人最先使用）
A boomerang is a curved piece of wood which comes back to you if you throw it in the correct way. Boomerangs were first used by the people who were living in Australia when Europeans arrived there.

2. （计划）起反作用，使自食其果
If a plan boomerangs, its result is not the one that was intended and is harmful to the person who made the plan.

1. a miscalculation that recoils on its maker

Synonym: backfire

2. a curved piece of wood
when properly thrown will return to thrower

Synonym: throwing stickthrow stick