那个坏脾气的老板威胁要痛打迟到的员工。

The bad-tempered boss threatened to ___thrash the late employee.

他们队在决赛中以8比2惨败给对方。

Their team was ___thrashed 8-2 in the final.

那条受伤的蛇在地上痛苦地扭动打滚。

The injured snake ___thrashed painfully on the ground.

我们花了整个下午激烈讨论这个提案的优缺点。

We spent the whole afternoon ___thrashing out the pros and cons of this proposal.