Number + 条 + Noun
The measure word 条 (tiáo) is used for long, thin, or strip-like objects such as roads, rivers, fish, pants, and messages. It must be placed between a number and a noun. For example, 一条消息 means 'one message' and 一条路 means 'one road.'
他给我发了一条很长的消息。
Tā gěi wǒ fāle yì tiáo hěn cháng de xiāoxī.
He sent me a very long message.
这条河是我们小时候经常游泳的地方。
Zhè tiáo hé shì wǒmen xiǎoshíhòu jīngcháng yóuyǒng de dìfāng.
This river is where we often swam as children.
她买了两条裤子和一件外套。
Tā mǎile liǎng tiáo kùzi hé yí jiàn wàitào.
She bought two pairs of pants and a jacket.