Nanophyn
二甲哌啶
🗣️ 情景例句
She is busy now.
她正忙着呢。
Skill and confidence are an unconquered army.
技能和信心是不可克服的军队。
It was spring,but the weather was awful.It rained all the time.
是春天，但天气太糟了。一直在下雨。