So if we do this and we form the molecule ammonia, let's switch to a clicker question, and have you tell me what the bond angle - is going to be in ammonia -- HNH Actually, let me draw it on the board as you look -- actually, can you put the class notes on, since you don't actually have your notes to refer to.

如果这样做的话，我们就可以形成氨分子，让我们来做一个课堂练习,你们告诉我氨分子中的键角是多少-,键角，the，h，n，h，bond，angle。,实际上让我在黑板上画出它来，这样你们可以看到实际上-,你能把课堂讲义放出来吗，因为你们没有讲义可以参考。

麻省理工公开课 - 化学原理课程节选

Mike Phillips was immediately on the centre's inside shoulder and the final act was supplied by Walker, as the Scotland left wing appeared on the other flank to switch the angle of attack again.

BBC: Ospreys 16-20 Ulster

The LG V300 will come with an impressive list of features including 2nd Generation Intel Core processors, 3D FPR display, In Plane Switch (IPS) screen technology that creates a stunning 178-degree viewing angle and a triple camera system for superb multitouch capability.

ENGADGET: LG V300 all-in-one hands-on at Computex 2011 (video)