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- By defining the directed area of polygons, We went into its properties and applications andobtained several new fixed value theorems of polygons. 通过给出平面多边形的有向面积，探讨有向面积的一些性质和应用，提出一平面多边形的若干新的定值定理。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- He has chosen the most direct route. 他选取了最直的路线。
- She's very direct, believes in speaking her mind. 她为人直率，喜欢有什么说什么。
- Can you direct me to the shoe department? 请告诉我卖鞋部在哪里。
- Be there a direct train for Beijing to Nanning? 从北京到南宁有直达车吗？
- See that direct heat does not play on it. 当心别让它直接受热。
- It's a long way by road the train is more direct. 走公路很远--乘火车近。
- Would you please direct me to the zoo? 请问去动物园怎么走?
- My eyes were blinded by the direct rays of light. 在光线的直射下，我看不清楚东西。
- Her opinions are the direct opposite of mine. 她的意见与我的截然相反。
- She is in direct contact with the general manager. 她与总经理直接联系。
- In this paper, a fixed value theorem for directed areas of a kind of triangles in elliptic circumscribed polygons is obtained, thus some results, including the famous Brianchon theorem for elliptic circumscribed triangles, are deduced easily. 本文给出椭圆外切 2n +1边形中一类切顶线三角形有向面积的一个定值定理及其若干推论 ,其中包括射影几何中著名的Brianchon定理在椭圆外切三角形中的情形
- In this paper,some fixed value theorems for directed areas in circular c ircumscribed pentagons are obstain ed,thus some concurrent results,including the famous Brianchon theo rem for circular circumscribed pent agons,can be deduced easily. 本文给出圆外切五边形中有向面积的几个定值定理,并据此推出圆外切五边形中的一些共点性结论,其中包括射影几何中著名的Brianchon定理在圆外切五边形中的情形。
- I'm in direct contact with the hijackers. 机者保持著直接的联系。
- The army is under the king's direct command. 军队由国王直接统率。
- Give me a direct answer, and stop evade the issue. 给我一个直截了当的回答，不要回避这一问题。
- He took a direct flight to New York. 他搭乘直航班机到纽约。
- Can you direct me to the police office? 你能告诉我去警察局怎么走吗?
