Elastoprene
二烯橡胶
🗣️ 情景例句
He has no command over himself.
他不能克制自己。
When an opportunity is neglected,it never comes back to you.
机不可失，时不再来；机会一过，永不再来。
Today, enough soundings are available to enable a relief map of the Atlantic to be drawn
现在已有足够的水深测量数据来绘制一张大西洋洋底地形图，