It's important for you to keep a cool head at this moment.
这时候保持头脑冷静是很重要的。
What time is the mail delivered on Saturday?
邮件在星期六什么时间被递送?
Do you remember one afternoon ten years ago when I came to your house and borrowed a necklace of yours? Pierre, my husband, was working in a government office. We'd been invited to a ball at the palace so I needed to borrow some jewellery.