公司突然裁员导致了严重的反弹效应，员工纷纷辞职抗议。

The company's sudden layoffs caused significant ___blow-back, with many employees resigning in protest.

由于设计缺陷，手枪的强烈后坐力让他差点脱手。

The pistol's strong ___blow-back nearly made him lose his grip due to the design flaw.