1 sentence

1. 他在亚马逊丛林中进行了一次为期三个月的科考探险。

   tā zài Yà​mǎ​xùn cóng​lín zhōng jìn​xíng le yī cì wéi​qī sān gè yuè de kē​kǎo tàn​xiǎn.

   He conducted a three-month scientific expedition in the Amazon jungle.

   Source: Dong Chinese Dictionary