不失时机

yòng bīng nán zài bù shī shí jī

用兵难在不失时机。

The diffcult thing in war is to seize your opportunities before they're gone.

píng lùn bù shī shí jī

评论不失时机。

The remark is well-timed.

zhè xiē cè shì huì bèi zhèng kè men bù shī shí jī de ná qù dà zuò zhèng zhì wén zhāng

这些测试会被政客们不失时机地拿去大做政治文章。

These tests will be used by politicians to make cheap political points.