Photochromism
n. 光致色变性, 光致色变现象\\n[化] 光致变色; 光致变色现象
🗣️ 情景例句
I'll come and give you a hand tomorrow.
我明天来帮你忙。
It's hard to say.
难说。
Though she hesitated for a moment, she finally went in and asked to see a dress that was in the window.
她虽然犹豫了片刻，但终于还是走进了商店，要求把陈列在橱窗里的一件衣服拿给她看。