Formerly,intheUnitedStates,manynursesworkedasprivatedutynursesratherthaninhospitals.
Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
Eyespots,themostrudimentaryeyes,arefoundinprotozoan原生动物flagellates鞭毛虫,flatworms扁形虫,andsegmentedworms片段蠕虫.
Whencarbonisaddedtoironintheproperproportions,theresultissteel.
Bythenineteenthcentury,embroideryonmen'sclothinghadvirtuallydisappearedexceptfortheoccasionaldecorativevestandtie.