牵头: to lead (an animal by the head), to take the lead, to coordinate (a combined operation), to mediate, a go-between (e.g. marriage broker)...
横七竖八: in disorder, at sixes and sevens (idiom)...
必须: to have to, must, compulsory, necessarily...
起程: to set out, to leave...
质地: texture, background (texture), grain, quality, character, disposition...
手续费: service charge, processing fee, commission...
解体: to break up into components, to disintegrate, to collapse, to crumble...
捆: tie; bind; bundle up...
消失: to disappear, to fade away...
头头是道: clear and logical...