Palaechinoida
古海胆目
🗣️ 情景例句
If we cancelled third world debt, perhaps those countries could start to rebuild.
如果我们取消第三世界债务，也许那些国家就会开始重建。
Don't give up.
不要放弃。
The seed was sprayed over the ground in huge quantities by aeroplanes.
飞机把这种草籽大量地撒播在地上。