The two small stiff membranes you see under the first abdominal segment are like the skin of a drum.

你能看到在这第一腹节下面的这两个硬质膜就如同鼓的蒙皮一样。

So today, on our first segment, we get into it.

所以今天，在我们的第一部分， 我们进入它。

Teachers, you may want to preview this first segment. It contains some of the violent phrases that are central with these cases.

教师们，您们可能想要预览这第一段。它包含一些此案所重点关注的暴力短语。

In fact, they have already finished the first segment of their flight, from the United Arab Emirates to neighborhood Oman.

事实上，他们已经完成了从阿拉伯联合酋长国到邻国阿曼的第一段飞行。