Allyn says U.S.troops so far are handling security only for their own operations including establishing facilities on shore near the town of Leogane, west of Port-au-Prince, where a Marine Expeditionary Unit began to arrive Tuesday morning.

VOA: standard.2010.01.19

I use Star Festival CD-ROM as part of a unit on Japan and places in the world.

我用“七夕节“光盘作为了解,日本和世界各地的媒介。

麻省理工公开课 - 媒体、教育、市场课程节选

And, we'll talk about fuel cells later in the semester when we do the unit on redox reactions and electrochemistry.

这学期我们随后会讨论燃料电池,当我们讲到,关于氧化还原反应和电化学单元时。

麻省理工公开课 - 固态化学导论课程节选

But depending on the unit chosen, the associational networks will differ.

选择不同的基本单位，这种联系也大相径庭。

耶鲁公开课 - 文学理论导论课程节选

Let's focus just on that unit, that measure.

咱们只看,这一段,这个小节

耶鲁公开课 - 聆听音乐课程节选