正在: just at (that time), right in (that place), right in the middle of (doing sth)...
上车: to get on or into (a bus, train, car etc)...
扩展: to extend, to expand, extension, expansion...
所谓: so-called, what is called...
皮鞋: leather shoes...
大体: in general, more or less, in rough terms, basically, on the whole, overall situation, the big picture, (Tw) remains (of a dead person)...
弥补: to complement, to make up for a deficiency...
半途而废: to give up halfway (idiom); leave sth unfinished...
口: mouth, classifier for things with mouths (people, domestic animals, cannons, wells etc), classifier for bites or mouthfuls...
狼吞虎咽: to wolf down one's food (idiom); to devour ravenously, to gorge oneself...
