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的水是无铅的，运输这些水的管道也是无铅的。

It's a mixture of 90% Texaco unleaded gasoline and 10% ethanol made from renewable crops like corn.

这是一种混合物，由90%的德士古无铅汽油和10%从玉米等可再作物中提取的乙醇组成。

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

我按下了我想要的无铅汽油等级的按钮，然后将喷嘴放入我的油箱。

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.

但是 1996 年，美国终于卖完了最后的含铅汽油，而现分加油站依然贴上标签让人知道就算是他们最便宜的汽油都是无铅的。

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 PCBA 中使用无铅焊料的一个优点。答： 它更环保，因为它减少了有毒铅释放到环境中。