get out of: 避免
Explore the world and get out of your comfort zone.
去探索世界吧，離開你的舒適地帶。
Excuses are ways to get out of owning up to something.
借口是逃避承認(rèn)很多事情的方式。

allergic to: 對…過敏
And he seems allergic to journalists and their pesky questions.
而且他似乎對記者和他們詢問的棘手問題過敏。
Maybe you are allergic to some ingredients in it.
可能你對這種面霜中的某種成分過敏。

let alone 更不用說，還不算
Protecting the air, let alone improving it, is a challenge.
別說要改善空氣了，現(xiàn)在就是保護(hù)它也很難。
Tourists need have no truck with maldivian culture or currency, let alone its politics.
游客們不必與馬爾代夫的文化、貨幣打交道，更別說政治了。