1.let alone 不理，不管

Protecting the air, let alone improving it, is a challenge.
別說要改善空氣了，現在就是保護它也很難。

The central government has struggled to count this debt, let alone control it.
對此中央政府連貸款金額都無法匯總，更別說對貸款進行調控。

2.live with 與…一起生活

I think she went to live with our grandmother.
我想她是去和祖母一起住了吧。

Do you live with someone?
你和什么人住在一起嗎？

3.adopt by 采用

The compensation commission of the people's court shall adopt by way of written examination to handle a compensation claim.
人民法院賠償委員會處理賠償請求,采取書面審查的辦法。

The segregation that the person that has osculatory history with sars patient wants 2 weeks to adopt by a definite date commonly observes.
與非典型肺炎病人有接觸史的人一般要通過為期2周的隔離觀察。