2 sentences for 井 (Jǐng)

1. 井先生是这位医生的老病人。

   Jǐng xiān​sheng shì zhè wèi yī​shēng de lǎo bìng​rén.

   Mr. Jing is an old patient of this doctor.

   Source: Dong Chinese Dictionary

2. 观测南方天空时，我们要学会辨别井的位置。

   guān​cè nán​fāng tiān​kōng shí, wǒ​men yào xué​huì biàn​bié Jǐng de wèi​zhi.

   When observing the southern sky, we should learn to identify the position of the 'Well' (Jing) constellation.

   Source: Dong Chinese Dictionary