Reflection density
[医] 反射密度
🧩 词语组成解析
🗣️ 情景例句
Now let's head off for the city and the university club.
现在让我们进城去， 到大学俱乐部。
She's meeting me at the Libe at seven.
她约好七点跟我在图书馆见面。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。