Advance knowledge of anticipated weather conditions is invaluable for planning.

对天气情况进行预先了解，对任务设计来说是极为重要的。

I've heard of only 2 cases where Nikon reps had an advance knowledge of upcoming products and both cases were about a point and shoot camera.

我听说过的只有2情况下，尼康代表了先进知识，即将推出的产品和这两种情况下有一个点和相机拍摄。