原: former, original, primary, raw, level, cause, source...
轻松: light, gentle, relaxed, effortless, uncomplicated, to relax, to take things less seriously...
动员: to mobilize, to arouse, mobilization...
供求: supply and demand (economics)...
月份: month...
炼: smelt; refine,...
嫂子: (coll.) older brother's wife, sister-in-law...
另: other, another, separate, separately...
送行: to see someone off, to throw someone a send-off party...
说真的: to tell the truth, honestly, in fact...