有關directions的精選大全

directions用什麼介詞
directions用介詞in,indirections中文意思是“向四面八方”Theshockwaveformsaconeofpressurizedairmoleculeswhichmoveoutwardandrearwardinalldirectionsandextendtotheground.衝擊波形成了一個由壓縮氣體分子構成的...
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