Photorefractive
光致折变的
🗣️ 情景例句
She is making steady progress in her learning.
她在学习中不断进步。
What we are ignorant of is immense.
我们不知道的东西多得不可胜数。
Ready? Go! Mr. Hu shouted, and the boys started to run.
“预备--跑！”胡先生喊道，男孩子们开始跑。