Now, this is the chemistry lab. Have you been in this lab before?
好啦,这是化学实验室。你们以前到过这个实验室吗?
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.