1.let alone 不理，不管

Protecting the air, let alone improving it, is a challenge.
别说要改善空气了，现在就是保护它也很难。

The central government has struggled to count this debt, let alone control it.
对此中央政府连贷款金额都无法汇总，更别说对贷款进行调控。

2.live with 与…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吗？

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.
人民法院赔偿委员会处理赔偿请求,采取书面审查的办法。

The segregation that the person that has osculatory history with sars patient wants 2 weeks to adopt by a definite date commonly observes.
与非典型肺炎病人有接触史的人一般要通过为期2周的隔离观察。