Meaning of yī kuài:
一块
one block; one piece
Tā yòng yī zhī shǒu ná qǐ le yī kuài shí tóu.
他用一只手拿起了一块石头。
He picked up a block of stone with one hand.
Wǒmen kěyǐ fēnxiǎng yī kuài dàngāo.
我们可以分享一块蛋糕。
We can share a piece of cake.
one (unit of money)
Zhè píng shuǐ zhǐ yào yī kuài qián.
这瓶水只要一块钱。
This bottle of water only costs one yuan.
together; in the same place; in company
Wǒmen yī kuài qù kàn diànyǐng.
我们一块去看电影。
We go to the movies together.
Wǒmen míngtiān zài zhèlǐ jùhuì, yī kuài liáo liáo tiān.
我们明天在这里聚会,一块聊聊天。
We will gather here tomorrow and chat together.
Wǒmen yīqǐ qù gōngyuán wán ba, wǒ xiǎng hé nǐ dài zài yī kuài.
我们一起去公园玩吧,我想和你待在一块。
Let's go to the park together; I want to be in company with you.