青云翻译

The end of the first layer of concrete slab Party B to pay 30,000 U.S. dollars,

First floor slab of concrete at the end of pay party a party b $ 30,000,

When a yet higher goal board concrete conclusion the party of the first part pays the second party 30000 dollars,

正在翻译，请等待...

First floor slab of concrete at the end of pay party a party b $ 30,000,