Porro prism
普罗棱镜
🧩 词语组成解析
prism
['prɪzəm]
n. 棱镜，棱晶;[数]棱柱体，角柱（体），[物]（结晶）柱;[物]分光光谱，光谱的七色，折光物体;
🗣️ 情景例句
How can I thank all of you?
我该如何感谢你们呢？
On a crowded train, one comes in contact with many people.
在拥挤的火车里面，会和许多人接触。
it is extremely difficult to estimate the true value of the services which people perform for us.
但要估算别人为我们为所提供的服务的价值却是极其困难的。