Lie down on your couch and scoot around until your back is on the cushions and your legs are resting on the seat back, at a 90 degree Angle to your waist.

躺在沙发上，后背靠着坐垫，腿搁在椅背上，保持到腰90度的角度。

youdao

Not all smooth surfaces reflect photons back to us, even though, technically, they should bounce back at the same Angle at which they hit the surface.

并非所有的光滑的表面都能将光子反射到我们的眼睛，即使从技术上讲，它们是能以击中表面的同样的角度反射回来的。

youdao

Tom Shanklin - perhaps fortunate to still be on the field after a clumsy challenge in the air on Imanol Harinordoquy - got beyond the gain-line and from there fly-half Jones picked out Byrne's superb angle for the full-back to race 35 untouched metres to the line.

BBC: France 21-16 Wales

The usually reliable Carter lost possession near the Wallabies try-line and on the counter attack, full-back Beale sprinted two-thirds of the field, running at an angle to stretch the New Zealand defence and touch down.

BBC: New Zealand 20-10 Australia

Then, at the same place, bend it back to form a right-angle in the opposite direction.

ECONOMIST: Aircraft fatigue