比起: compared with...
哥哥: older brother...
主要: main, principal, major, primary...
要求: to request, to require, requirement, to stake a claim, to ask, to demand...
独自: alone, by oneself...
后勤: logistics...
江: river...
受惊: startled...
今天: today, at the present, now...
估计: to estimate, to reckon, (coll.) to suppose...
