4 sentences

1. 北方人冬天习惯囤积白菜。

   běi​fāng​rén dōng​tiān xí​guàn tún​jī bái​cài.

   People in northern China are used to stockpiling Chinese cabbage in winter.

   Source: Dong Chinese Dictionary

2. 他最喜欢吃奶奶做的熬白菜。

   tā zuì xǐ​huan chī nǎi​nai zuò de āo bái​cài.

   His favorite dish is the stewed cabbage his grandmother makes.

   Source: Dong Chinese Dictionary

3. 地里的白菜太密了，需要间一下苗。

   dì​lǐ de bái​cài tài mì le, xū​yào jiàn yī​xià miáo.

   The cabbages in the field are too dense and need to be thinned out.

   Source: Dong Chinese Dictionary

4. 这种白菜的叶子是深绿色的，吃起来很清脆。

   zhè zhǒng bái​cài de yè​zi shì shēn lǜ​sè de, chī qi​lai hěn qīng​cuì.

   The leaves of this cabbage are dark green and have a very crisp texture.

   Source: Dong Chinese Dictionary