They measured levels of a byproduct of cigarette fumes in the kids' saliva to gauge smoke exposure and had parents fill out a questionnaire about the kids' emotional, behavioral and social problems.

他们检测儿童唾液中一种香烟副产物的水平以估测香烟烟雾接触度，并让家长填写一份关于儿童情感、行为和社交问题的调查表。

youdao

I'd watch the gas gauge going down, but I'd keep thinking, it's not convenient to fill up right now. I'll get to it later.

我总是看着油表归零，但我仍在想，现在不方便加油，还是晚会儿去吧。

youdao

They had the volunteers fill out sleep diaries but also measured their movements while in bed to gauge whether they were really asleep.

他们有志愿受试者的睡眠日记，但同时也监测他们睡眠时的活动，以判断他们是否真的入睡。

youdao

In fact, on every fill up (I currently have 7800 miles on the car) no gauge in the car has ever stated the correct gas mileage (MPG) since the car was purchased.

FORBES: EPA Slams Hyundai And Kia For Overestimating MPG

Trackyourhappiness.org pings me three times a day to fill out surveys to track my moods, requesting answers within ten minutes to gauge my exuberance quotient.

FORBES: Adventures in Self-Surveillance, aka The Quantified Self, aka Extreme Navel-Gazing