Refractograph
折射图
🗣️ 情景例句
And here he is--Popo the Clown.
这位就是小丑Popo。
I love you with all my heart.
我打心眼儿里爱着你！
the necessary method of study is to group the relevant material and to take note of all possible variant forms and conditions.
应采取的研究方法是，把有关各方面的材料汇集起来，同时注意任何可能出现的异常情况和条件。