1. There are many varieties and grades of paper materials, and whilst it is fairly easy to spot the varieties, it is far more difficult to spot the grades. 纸张材料有许多品种和等级,虽然很容易分辨它们的种类,但要分辨它们的等级就困难得多了。
2. He gained valuable experience whilst working on the project. 从事这项工程使他获得了宝贵的经验。
3. You will play decoy whilst I beg. 我去乞讨,你来当诱饵。
4. My mother died whilst I was yet a boy. 我母亲在我还是个孩子的时候就去世了。
5. All the ladies stood round her, whilst the kissing was going on. 当接吻正在进行的时候,所有的女士都围绕着她站着。