Phstochrome
[医] 色光的
🗣️ 情景例句
Yes, it is right.
对，是正确的。
One cannot always be a hero, but one can always be a man.
人难一世称雄，但可一生为人。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。