单词	sit-up
释义	sit-up n. 仰卧起坐
随便看	origin of natural gas origin of nuclei origin of organic molecules origin of petroleum origin of product origin of replication origin of rifling origin of species origin of stand origin of state origin of target noise origin of the atmosphere origin of the earth origin of the electrical installation origin of the solar system origin of the solar system materials origin of the trajectory origin of trade origin of transfer origin of transition curve origin of vector origin of walk origin (or point of attachment) originous origin period 顝類顟顠顡顢顣顤顥顦御ノジ御ノ字御ハコビ御ハライ御ハライ御ハンムシ御ハン蒸シ御ヒラキ御フレ御ヘイカツギ