4 sentences

1. 他在国际象棋大赛中获得了冠军。

   tā zài guó​jì​xiàng​qí dà​sài zhōng huò​dé le guàn​jūn.

   He won the championship in the chess tournament.

   Source: Dong Chinese Dictionary

2. 他在这次全国大赛中获得了冠军。

   tā zài zhè cì quán​guó dà​sài zhōng huò​dé le guàn​jūn.

   He won the championship in this national competition.

   Source: Dong Chinese Dictionary

3. 几位资深专家受邀来评判这次设计大赛。

   jǐ wèi zī​shēn zhuān​jiā shòu yāo lái píng​pàn zhè cì shè​jì dà​sài.

   Several senior experts were invited to judge the design competition.

   Source: Dong Chinese Dictionary

4. 这次选美大赛吸引了来自全国各地的众多佳丽。

   zhè cì xuǎn​měi dà​sài xī​yǐn le lái​zì quán guó gè dì de zhòng​duō jiā​lì.

   The beauty pageant attracted many beauties from all over the country.

   Source: Dong Chinese Dictionary