Piston land
[机] 活塞与活塞环接合处的留槽部份
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
land
[lænd]
n. 陆地;国家;地产;土地;
vt.& vi. （使）登岸;降临;使陷于（困境）;使不得不应付;
vt. 自船上卸下;获得;捕到;钓到（鱼）;
vi. 跳落，跌落，被抛落（地面）;
🗣️ 情景例句
Where did you go to school?
你在哪儿上学？
The restaurant is upstairs.
那餐厅在楼上。
Libraries made education possible, and education in its turn added to libraries: the growth of knowledge followed a kind of compound interest law, which was greatly enhanced by the invention of printing.
藏书使教育成为可能，而教育反过来又丰富了藏书，因为知识的增长遵循着一种“滚雪球”的规律。印刷术的发明又大大提高了知识增长的速度。