subterfuge

他用欺骗手段拿到了竞争对手的商业计划。

He obtained the competitor's business plan through ___subterfuge.

他说自己手机没电了，这只是一个逃避责任的借口。

Claiming his phone died was just a ___subterfuge to avoid responsibility.

这位记者通过冒充安全检查员的诡计进入了受限设施。

The journalist gained access to the restricted facility by means of ___subterfuge, posing as a safety inspector.