4 sentences

1. 她受了委屈，在那儿嘟着嘴。

   tā shòu le wěi​qu, zài nà​r dū zhe zuǐ.

   She felt wronged and was pouting.

   Source: Dong Chinese Dictionary

2. 他嘟起咀，吹了一个响亮的口哨。

   tā dū qǐ zuǐ, chuī le yī gè xiǎng​liàng de kǒu​shào.

   He pursed his lips and blew a loud whistle.

   Source: Dong Chinese Dictionary

3. 他嘴里一直在嘟噜着什么，显然很不满。

   tā zuǐ lǐ yī​zhí zài dū lū zhe shén​me, xiǎn​rán hěn bù​mǎn.

   He kept muttering something under his breath, clearly very dissatisfied.

   Source: Dong Chinese Dictionary

4. 汽车喇叭嘟地响了一声。

   qì​chē lǎ​ba dū de xiǎng le yī shēng.

   The car horn honked once.

   Source: Dong Chinese Dictionary