英语翻译:undermanned
Whatarethekeyfeaturesofaresearchpaper?
重写句子:Hockeyisasportwhichispopularinmanycountriesaroundtheworld.(simplesentence)
Thevehiclewastravelingatspeeds________90milesperhour.
重写句子:Fossilfuelsarenon-renewable.Weneedtofindalternativeenergysources.(compoundsentence)