When it receive a TURN left command, it will rotate 90 degree to the left.
当它收到左转命令，它会旋转90度到左边。
The wings were on articulated collars that allowed them to rotate 90 degrees for landing.
机翼装在铰链圈上，可以在着陆时旋转90度。
That's fine, but it seems like a bit of overkill if all I want to do is rotate 90 degrees.
这很好，但似乎有点矫枉过正，如果所有我想要做的就是旋转90度。
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