倒塌: to collapse (of building), to topple over...
余: extra, surplus, remaining, remainder after division, (following numerical value) or more, in excess of (some number), residue (math.), after, I, me...
告示: announcement...
开垦: to clear a wild area for cultivation, to put under the plow...
紧缩: (economics) to reduce, to curtail, to cut back, to tighten, austerity, tightening, crunch...
而且: (not only...) but also, moreover, in addition, furthermore...
否则: if not, otherwise, else, or else...
类别: classification, category...
退回: to return (an item), to send back, to go back...
不为人知: not known to anyone, secret, unknown...