例句與造句

1. "' Euler calculus "'is a methodology from applied algebraic topology and integral geometry that integrates constructible functions and more recently definable functions by integrating with respect to the Euler characteristic as a finitely-additive Pierre Schapira and Oleg Viro in 1988, and is useful for enumeration problems in computational geometry and sensor networks.
2. It's difficult to find euler calculus in a sentence. 用euler calculus造句挺難的