Backmixing
[化] 返混
🗣️ 情景例句
I had dinner with him Saturday,
星期六我与他一起吃晚餐，
Necessity and oportunity may make a coward valient.
需要和机会可能使懦夫变成勇士。
shape in only two dimensions.
形态只有两种尺度。