1 sentence

1. 评委会对所有参赛作品进行了认真的甄选。

   píng​wěi​huì duì suǒ​yǒu cān​sài zuò​pǐn jìn​xíng le rèn​zhēn de zhēn xuǎn.

   The committee conducted a careful selection of all the entries.

   Source: Dong Chinese Dictionary