For the effect, you need to specify a size, with the horizontal size first, and then the vertical size.
为实现这个效果,您需要指定一个尺寸,首先是水平尺寸,然后是垂直尺寸。
It's got to be practical so don't forget to specify things like who would be involved, and the cost, and the order that things would be done in.
它必须是实用的,所以不要忘记指定诸如参与者有谁、成本、完成顺序等事宜。
The trick is not only to specify just one or even two dimensions of the objective, but also to understand how to help people better achieve the objective.