当你正在上课的时候，你有没有在笔记本的空白处画过画？
When you're sitting in class, have you ever drawn pictures in the margins of your notebooks?
他正在上课。
一张照片显示，在一个农村的教室里，一些学生正在上课，在教室的泥地面上还有一些泥水坑。
One photo showed that students at their desks in a rural classroom, surrounded by muddy puddles on a dirt floor.
你给他买了个喇叭？他正在上课吗？
现在是九点钟，我们正在上课。
我们正在上课，这时发生了地震。
正在上课的这位女老师也是一位阿姨。
The female teacher, who was giving her class a lesson was also an aunt.
历史老师正在上课，但是弗兰克却在想别的事情。
The history teacher is having a lesson, but Frank is thingking about other things.
他现在正在上课。
对不起，您拨打的用户正在上课中，请您不要再拨。
Sorry! The subscriber you dialed is busy now, please don't redial .
课间时分，21岁的王玉穆(音译)走进他女朋友正在上课的阶梯教室。
It's the class break. Wang Yumu, 21, walks into the lecture theater where his girlfriend has been taking classes.
一位漂亮的女士把我们领到了化学实验室，在那儿，杰克逊先生正在上课。
A pretty lady led us into the chemistry lab, where Mr. Jackson was giving a lecture.
然而，非常的不幸，星期天早上自行车在在校园里被偷了，那时候我正在上课。
However, itwas so unlucky that the bike was stolen on Sunday in the campus when I was havingclass. That bike I just had ride three times.
我目前还不会说英语，但是我正在上课，幸运的是，在阿森纳更衣室里面有很多说法语的人。
I don't speak much English yet but I'm taking lessons - and luckily there are a lot of French speakers already in the Arsenal dressing room.
目击者说，事发时，健身房内正在举办拉丁舞培训班，约有30名妇女在上课。
Eyewitnesses said that when the incident happened, the gym is being organized by the Latin dance courses, about 30 women were in the class.
目击者说，事发时，健身房内正在举办拉丁舞培训班，约有30名妇女在上课。
The witness said, the gym was holding Latin dance lessons with about 30 students when it happens.
目击者说，事发时，健身房内正在举办拉丁舞培训班，约有30名妇女在上课。
The witness said, the gym was holding Latin dance lessons with about 30 students when it happens.
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