1 sentence

1. 这个零件的连接头是凸的，正好可以插进那个槽里。

   zhè​ge líng​jiàn de lián​jié​tóu shì tū de, zhèng​hǎo kě​yǐ chā​jìn nà​gè cáo lǐ.

   The connector of this part is convex, so it fits perfectly into that slot.

   Source: Dong Chinese Dictionary