当时我才30岁，可美容公关们反复向我宣扬这件神奇的东西，并问我想不想免费试一试。

I was 30, and beauty PRs kept telling me about this wonder-stuff, and asking if I wanted to try it for free.

youdao

我决定试一试，因为我没有什么可失去的。

I decided to have a try because I had nothing to lose.

youdao

基于这些可测定的和已知的参数，我们构建的数学模型有助于了解受试个体的能量消耗特点。

Based on these measurable and known parameters, the mathematical model we established will help understand the characteristics of the tested individual's energy expenditure.

youdao

We'll try some new products that are disaster.

我们试营过一些可称为灾难的新产品。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选