Consider a family of parallel lines that cut the conic.設有一組平行線與圓錐曲線相交.The circular points are really a degenerate conic.虛圓點實際上是一退化的二次曲線.A family of parallel lines cut the conic.有一組平行線與圓錐曲線相交....
...a stream of platitudes, outlining many problems but offering few solutions.概述了很多問題、但幾乎沒有提出解決辦法的一串陳詞濫調You hear all the platitudes about teamwork but talk out of both sides of their mouths.你常常聽到某些公司夸夸其談團隊合作的重要性,但是事實卻不盡然...
They felt as though they had done something discreditable and unclean.他們覺得自己仿佛做了什么齷齪丟臉之事。She had been suspended from her job for discreditable behaviour.她因行為不端而被停職。Bit by bit , she extracted from him discreditable histor...
He was wearing shorts which showed his long, muscular, hairy legs.他穿著短褲，露出自己強壯多毛的長腿。Something was sticking from the pocket of the little man's grimy shorts.小個子男人臟乎乎的短褲口袋里鼓鼓的，伸出來個什么東西。There was so much blood it had s...