这是平行四边形的对边.These are the opposite sides of the parallelogram.这种作图法常被称为矢量相加的平行四边形法则.This construction is often called the parallelogram law of addition of vectors.梯形是具有两平行边的四边形.A trapezoid is a quadrilateral with two para...
Unconscious envy manifests itself very often as this kind of arrogance.潜意识里的嫉妒常表现为这种傲慢自大。A survivor was knocked unconscious when the helicopter ditched.在直升机紧急迫降时，一名幸存者被撞昏过去。Mark was lying unconscious but with no outward ...