Calcium manganate
[機] 錳酸鈣
?? 詞語組成解析
n. 錳酸鹽\\n[機] 錳酸鹽
??? 情景例句
Food is necessary to maintain life.
食物是維持生命所必須的。
Change the subject.
說點別的吧！
It was the idea of supporting a craft on a 'pad',or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
用一個氣墊來支撐船體，低壓空或軟墊，軟墊周圍用高壓空氣環繞。