Stromatoporoids
(stromatoporoid 的复数) 层孔虫类
🗣️ 情景例句
She was playing with the idea of studying abroad.
她有出国留学的念头，但并非很认真。
Hang up one's hat in another's house.
在别人家里久留不去，长期居住。
only of metal, which wears away by friction.
而是由金属组成，而金属可以随着磨擦而磨损殆尽。