5 sentences

1. 他的考试成绩是丙等。

   tā de kǎo​shì chéng​jì shì bǐng děng.

   His test grade was a C.

   Source: Dong Chinese Dictionary

2. 甲乙丙丁，他是第四名。

   jiǎ yǐ bǐng dīng, tā shì dì​sì míng.

   A, B, C, D (first, second, third, fourth), he is fourth.

   Source: Dong Chinese Dictionary

3. 甲、乙、丙、丁，丁是第四个字。

   jiǎ, yǐ, bǐng, dīng, dīng shì dì​sì gè zì.

   Jia, Yi, Bing, Ding; Ding is the fourth character.

   Source: Dong Chinese Dictionary

4. 丙基是含有三个碳原子的有机官能团。

   bǐng jī shì hán​yǒu sān gè tàn yuán​zǐ de yǒu​jī guān​néng tuán.

   Propyl is an organic functional group containing three carbon atoms.

   Source: Dong Chinese Dictionary

5. 丙位在罗盘上代表方位的一百六十五度。

   bǐng wèi zài luó​pán shàng dài​biǎo fāng​wèi de yì​bǎi​liù​shí​wǔ dù.

   The 'Bing' position on a compass represents a heading of 165 degrees.

   Source: Dong Chinese Dictionary