这一工具体现了财政政策与货币政策的协同。视觉中国/图
Фото: Сергей Гунеев / РИА Новости
。新收录的资料对此有专业解读
The honest answer: because it shouldn’t work and has never been done before. TeX has no arrays, no functions with return values, no convenient local variables or stack frames, no integers bigger than 2^{31}-1, no bitwise operations. Macro expansion can recurse, but you get no call stack and deep recursion quickly hits engine limits. What TeX does have is a Turing-complete macro expansion engine and, with e-TeX extensions (used by modern pdfTeX), up to 32,768 integer registers called \count. That turns out to be just barely enough to implement a chess engine.
What is the answer to Connections todayCities: LIMA, NICE, OSAKA, PHOENIX
Here is what a Pages document looks like running under Mac OS X Lion: