2 sentences

1. 我的自行车的后轮爆胎了。

   wǒ​de zì​xíng​chē de hòu​lún bào tāi le.

   The rear tire of my bicycle is flat.

   Source: Tatoeba

2. 他把自行车后轮锁上，以防被盗。

   tā bǎ zì​xíng​chē hòu​lún suǒ shàng, yǐ​fáng bèi dào.

   He locked the rear wheel of the bike to prevent it from being stolen.

   Source: UM-Corpus: Education