合同中的第3节详细说明了付款条款。

The payment terms are clearly outlined in ___s-3 of the contract.

产品测试已进入第三阶段，我们正在为批量生产做准备。

The product testing has reached ___Stage 3, where we prepare for mass production.

这款车的S3型号配备了更强大的发动机。

The ___S3 model of this car comes with a more powerful engine.