We can build roads instead of factories, but fiscal stimulus can't help us to build more of both.1 This is just accounting, and does not need a complex argument about “crowding out.
The formulas by which the stimulus money for public schools would be allocated to states and local districts are complex, but take into consideration numbers of school-age children in poor families.
提供给州和地区公立学校的资助金额计算公式非常复杂，但是考虑到了穷人家庭的学龄儿童。
3
The simple cells are so-called because they respond approximately linearly to visual stimulus, whereas the complex cells exhibit nonlinear response to visual stimulation.