诀别: to bid farewell, to part (usually with little hope of meeting again)...
计时: to measure time, to time, to reckon by time...
墙壁: wall...
从来不: never...
班长: class monitor, squad leader, team leader...
结构: structure, composition, makeup, architecture...
场合: situation, occasion, context, setting, location, venue...
汽油: gasoline...
辆: classifier for vehicles...
递给: to hand it (i.e. the aforementioned item) to (sb)...
