Someseaurchins海胆havevenomous(toxin)spines
A、sensuous(feeling)Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野
AlthoughtheCarbon14methodofdatingoldobjectsisnotfoolproof,itisthebestmethodavailableatpresent
Formerly,intheUnitedStates,manynursesworkedasprivatedutynursesratherthaninhospitals.
Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
