我们非常自信我们的产品，我们提供一个完整的退款保证。
We are so confident in our products that we offer a full money-back guarantee.
他们将会随队，因此我们非常自信我们的中场仍然很强大。
He is traveling with us, so we are very confident that we are still strong in the midfield.
说到竞争能力和竞争优势，我们非常自信，我们有非常好的市场地位。
I'm quite confident that if you think about the capabilities and competencies we have created for ourselves we are very well position on the market.
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