1. The contamination of the ocean around Puget Sound may be just the beginning. 普吉特海湾周围海域的污染可能才开始。
2. Some people are still suffering ill effects from the contamination of their water. 一些人仍在遭受其水质污染的恶果。
3. It's not just dropping food on the floor that can lead to bacterial contamination. 不仅仅是食物掉在地上会导致细菌污染。
4. Not only is the authentic DNA getting washed out, but contamination is getting washed in. 不仅正统 DNA 被冲洗走了，污染源也被冲洗了进来。
5. When you want to study ancient human and Neanderthal remains, there's a big issue of contamination with contemporary human DNA. 当你想要研究古人类和尼安德特人的遗骸，一个大问题是当代人类的 DNA 受到的污染。
