Of course,with signers,their first language has no written system at all, just hand gestures.

VOA: special.2011.04.13

So let's first look at the left hand side.

所以首先让我们看看左手这边。

麻省理工公开课 - 热力学与动力学课程节选

For those of you don't know what that is it's simply an instrument that counts radioactive particles in the air, and MIT now that you're at MIT, you'll all have a chance to see one first hand if you're ever in any of the labs, especially in the chemistry or bio labs.

不知道它是什么,它就是一个简单的,计算在空气中放射粒子数目的仪器,你们现在来了，如果你们在实验室里工作的话,尤其是化学和生物实验室，你们有很多机会亲手用到它。

麻省理工公开课 - 化学原理课程节选

The documentary is the first ever to provide a first-hand look at how the group's medical teams respond to emergencies caused by war, infectious disease or natural disaster.

VOA: standard.2010.06.29

Of course,being the son of a famous Hollywood film star allowed him to go backstage and meet some of these musicians first hand, particularly at The Monterey Jazz Festival and the Hollywood Bowl in California.

VOA: standard.2010.04.16