Polianite
黝錳礦; 軟錳礦
??? 情景例句
Philip, I took Michelle to a school play
Philip,我?guī)ichelle看過學校演出的
I wouldn't, if I were you.
要是我就不會。
Later it crossed the Channel, riding smoothly over the waves, which presented no problem.
后來氣墊船跨越英吉利海峽，平穩(wěn)地在波浪上方行駛，波浪不再產(chǎn)生阻力。