她对那些负面评论不屑一顾，根本不放在心上。

She ___blew off those negative comments without giving them a second thought.

锅炉的泄压装置会在压力过大时自动启动。

The boiler's ___blowoff device activates automatically when pressure gets too high.

他又一次放我鸽子，连电话都没打就不来参加午餐约会了。

He ___blew off our lunch date again without even calling.