例句與造句

1. Source ( if applicable ) : I noticed the term " rectangular triangle " at http : / / projecteuler . net / problem = 176 and a Google search for " rectangular triangle " yields the Wikipedia page for " right triangle ."
2. I'm trying to improve my mathematics skills by doing the problems at Project Euler, but have hit a stumbling block with problem 48 : ( http : / / projecteuler . net / index . php ? section = problems & id = 48
3. It's difficult to find projecteuler in a sentence. 用projecteuler造句挺難的