acute angle effect的用法和样例：
- Wings spreading at acute angle, wing ca. 3 cm including nutlet.
- Case is worn - - bend processing through doing acute angle to fold in the section of all clapboard, case wears openly modelling to look to be appeared more gently from visual effect.
- Acute triangle: The three angle are all acute angles.
- Although 25 eyes presented with acute angle closure glaucoma, 6 eyes were insidious onset and asymptomatic.