And many people point to the Apollo programas being one of the placeswhere digital twins were first put into practice.

许多人指出阿波罗计划是数字孪生首次付诸实践的地方之一。

And they spent 50 percent as much on the ads about the programas they did on actually trying to come up with new biofuels.

他们在该计划的广告上花费的钱是他们在实际尝试开发新生物燃料上花费的 50%。