In 2011, a third of children 12 and under who died in motor vehicle crashes were not buckled up.

2011年，有三分之一12岁及以下死于车祸的儿童没有系安全带。

Is everything all right? - Yes, but in the interest of self-preservation, I've decided to avoid traveling in motor vehicles.

你一切都还好吗？ - 还好，但为了要更好地保护我自己，我决定今后要避免乘坐交通工具。

An average of 16 teens die every day in motor vehicle crashes and nearly 40% of those are caused by speeding.

平均16岁的青少年每天死于车祸，他们中间几乎40%是由于超速。

Meanwhile, the incomplete combustion of gas in motor vehicles releases nitrous oxide.

同时，机动车燃气不完全燃烧会释放一氧化二氮。

I've decided to avoid traveling in motor vehicles.

我决定今后要避免乘坐交通工具。

In the past decade, more than 9,000 children 12 and under died in motor vehicle crashes; in 2011, one third of the children who died weren't buckled up.

过去十年中，有9000多名12岁及以下的孩子在车祸中丧生；2011年，有三分之一因车祸丧生的孩子没有系安全带。