这件衣服上有个小疙瘩。

Zhè jiàn yīfú shàng yǒu gè xiǎo gēda.

There is a small lump on this piece of clothing.

他手上有几个小疙瘩，可能是被蚊子咬的。

Tā shǒu shàng yǒu jǐ gè xiǎo gēda, kěnéng shì bèi wénzi yǎo de.

He has a few small bumps on his hand; they might be mosquito bites.