锋利: sharp (e.g. knife blade), incisive, to the point...
得益于: to benefit from, thanks to...
腥: fishy (smell)...
继母: stepmother...
花: flower; blossom; bloom...
局限: to limit, to confine, to restrict sth within set boundaries...
适量: appropriate amount...
伤员: wounded person...
磁带: magnetic tape...
基层: basic level, grassroots unit, basement layer...
