It says the water that leaves those plants is lead free and that the pipes that transport it are too.

报告说，从这些处理厂中流出铅，运输这些管道也铅。

I pushed the button for the grade of unleaded gas I wanted and put the nozzle into my tank.

我按下了我想要铅汽油等级按钮，然将喷嘴放入我油箱。

But 1996, the last leaded gasoline was sold in the United States and most gas stations still use labels to assure everyone that even their cheapest fuel, is unleaded.

但在 1996 年，美国终于卖完了最铅汽油，而现在大部分加油站依然贴上标签让人知道就算他们最便宜汽油都铅。

10. Question: Name one advantage of using lead - free solder in PCBA. Answer: It is more environmentally friendly as it reduces the release of toxic lead into the environment.

10. 问题：说出在 PCBA 中使用铅焊料一个优点。答： 它更环保，因为它减少了有毒铅释放到环境中。