（二）业务之间具有明显的主附关系。主要业务居于主体地位，体现交易的实质和目的；附属业务是主要业务的必要补充，并以主要业务的发生为前提。
// 逻辑：count（矮个子数） + （栈非空则+1，代表能看到第一个更高的人；否则+0）
。关于这个话题，WPS下载最新地址提供了深入分析
From photo quality to the lever you pull to print photos, Leica’s Sofort 2 is a terrific camera that’s remarkably similar to the Instax Mini Evo. In all of my tests, the photos I took with both looked identical. The two hybrid cameras also print smartphone photos via Instax Mini film and offer 10 film and lens effects, along with a macro mode for those who want more creative control. The Sofort 2’s minimalistic look is stylish, too, even if it’s not as charming as the retro-inspired Evo.
I used to strive to keep my hands on the keyboard and only use the mouse when necessary, but this customized mouse kind of flipped that paradigm for me. Now anything I would have used a keyboard shortcut for in the past, I can do from the mouse. I incorporated several shortcuts that were new to me and several I was familiar with, but could never quite remember. Now I don’t need to remember the right combination of modifiers and letters or arrows on the keyboard; it’s all laid out on my mouse’s six keys in a way that is very logical (at least to me). I can quickly Shift-click; Control-click; Enter; Backspace; Delete; Escape; Tab; Refresh; Undo or Redo; cut, copy, & paste; switch apps, tabs, & virtual desks; control media; and so much more, without navigating the right-click menu, all from my mouse thanks to my custom firmware.