At the end of the day, these kinds of systems are primarily designed to protect against the sort of opportunistic smash-and-grab attack that makes up the majority of burglaries.
出自-2016年12月阅读原文
柯林斯高阶英汉双解学习词典释义
ADJ-GRADED
（某人的行为）机会主义的，投机取巧的
If you describe someone's behaviour as opportunistic, you are critical of them because they take advantage of situations in order to gain money or power, without thinking about whether their actions are right or wrong.
例句
Many of the party's members joined only for opportunistic reasons.该党很多成员只是抱着投机取巧的心理才加入其中的。
英英词典释义
Adjective
1. taking immediate advantage, often unethically, of any circumstance of possible benefit