943 says that packing light has a lot of advantages. It's less tiring to carry, and you don't have to check your luggage on flights so it saves you time waiting at baggage claim as well.
「943」說，背包輕的好處多多，不但長途旅行比較不會累，坐飛機也不必托運、可以省去等行李的時間，而且，萬一不幸遇到意外，要「全身而退」地逃走也比較容易。