But it is active only in embryos.

可是它仅仅在晶胚中才具有活性。

youdao

Active only the folders that your build process needs.

“活动”来映射生成过程所需的文件夹。

youdao

The study, which used GPS devices to track when and where teenagers were getting physical activity, found that, on average, they were physically active only 23 minutes a day while at school.

这项研究通过GPS定位技术追踪青少年的日常活动。 它发现：孩子们每天在校里“动起来”的时间平均只有23分钟。

youdao

Professor Rauschecker says large parts of the visual cortex became active during the sound and touch tests, but only in the blind people.

VOA: special.2010.10.13

Lechuga-Ballesteros' group hunted for a recipe for dried insulin, a daunting trick because insulin is biologically active only in a liquid state.

FORBES: The Impossible Made Possible

The figure of 2.3 million which puts it at second place in our list includes active forces only - not civilian staff, like the US figure.

BBC: Which is the world's biggest employer?

Gone from last year: Lance Armstrong (our list is for active athletes only), White (now that we're a year past the 2010 Winter Games), Ohno (ditto), and NBA stars Kevin Garnett, Dwyane Wade and Kobe Bryant (probably just random, though Wade's stature decreased a tad with LeBron James joining his team, and Garnett is another year older).

FORBES