The Antennae galaxies take their name from the long antenna-like "arms," seen in wide-angle views of the system.
触角星系因其长长的触角状旋臂而得名,用广角视野观察下这个“触角”很明显。
A right-angle viewfinder allowed her to take the picture without them knowing, even, as Evans showed her, when riding right beside them in the subway.
就像埃文斯展示给她的那样,即便是乘地铁时莱氏正好坐在拍照对象旁边,直角取景器也可让她神不知鬼不觉地完成拍摄。
Some cover individual countries or regions, others take a specific Angle such as the teaching of ethics.
有些排名只覆盖某一国家或者地区,有些从特定的视角出发进行排名,比如教育理念。
And then further you put some recording device, which in those days was a photographic plate, far across a room. So you take a tiny, tiny angle and you go far enough across the room.
接着放一些记录设备,那时用的是一个摄影用的感光片,取一个极小极小的角度,然后去到房间中足够远的地方。
As time increases, the angle increases and we can ask, "How long does it take for the particle to come back to the starting point?"
这个角度随着时间在增加,我们会问,"质点需要多长时间,才能转到起点"
I'm using the fact that when you take a cosine and change the angle inside the cosine, it doesn't care. whereas, if you go to the sine and change the angle inside the sine, it becomes minus sine.
我用了一个结论,当你使用余弦函数时,改变角度的正负,函数值不变,而对于正弦函数,改变角度的符号,则函数值也会变号
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