Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
A、obligationsUrbanrenewalprogramsstrivetoupgradeareasthatarebecomingslums.
Bythenineteenthcentury,embroideryonmen'sclothinghadvirtuallydisappearedexceptfortheoccasionaldecorativevestandtie.
Comets are still regarded with awe by some people.
Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
Some sea urchins海胆 have venomous (toxin) spines
