At least 173 corporate transactions took place last year , according to mergers and acquisitions tracker zephyr .
并购交易跟踪机构zephyr的数据显示,去年至少有173笔公司并购交易。
Zephyr shows no sign of running out of power anytime soon , and saltmarsh is hopeful it will stay in the air for another seven days , when the plane will finally return to earth .