乐观: optimistic, hopeful...
依靠: to rely on sth (for support etc), to depend on...
路程: route, path traveled, distance traveled, course (of development)...
自始至终: from start to finish (idiom)...
生锈: to rust, to grow rusty, to corrode, oxidization...
分配: to distribute, to assign, to allocate, to partition (a hard drive)...
减: to lower, to decrease, to reduce, to subtract, to diminish...
受罪: to endure, to suffer, hardships, torments, a hard time, a nuisance...
订婚: to get engaged...
亏本: to make a loss...
