youdao

We can switch trace on using this form

我们可以使用这种形式开启跟踪功能

youdao

Okay, could you put a trace on it or something?

好吧你能追踪一下或者做点别的什么吗？

youdao

She called on Eritrea to clarify the whereabouts of 11 MPs who disappeared without a trace in September,2001.

VOA: standard.2009.04.09

Now the trace you notice on the left side has very few and very sharp deflections.

现在大家注意到左侧的变位,很少但是很剧烈。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

The pesticides, known as organophosphates, are commonly sprayed on food crops and can be found in trace amounts on berries, green beans, and other fruits and vegetables sold in stores.

CNN: Pesticide exposure in womb may hurt your child's IQ

It was later found his DNA matched a hair on Miss Manning's shorts and a DNA trace found on the handle of a steering lock.

BBC: Rachel Manning

Landis says it might also be possible to use such earth-based stratospheric balloons to look for trace methane on Mars.

FORBES: Budgets Nudge NASA Toward Balloon-Based Planetary Science: First Target? Comet ISON