The use of perspective allows us to represent three dimensions on a flat page. 透视法的运用使我们能在平平的一页纸上表现出三维空间。
Operations with Cartesian coordinates in space are commutative, but rotations over three dimensions are not. 卡氏座标中的运作是可换的,而三维空间中的旋转是不可换的。
Warm, hot, raw water three dimensions separate thoroughly. 温热生水三度空间彻底分离。
But Grier and his team already foresaw the possibility of maneuvering hundreds or even thousands of particles in a three-dimensional space. 但是葛利尔和研究小组已经预见了在三度空间中移动千百颗粒子的可能性,因此他们试了许许多多不同的方法,希望能够个别产生绕射光束并加以控制。