Chromaticity diagram
[电] 彩色图表
🧩 词语组成解析
[计] 色度
🗣️ 情景例句
About the quality of 500 cartons of tin food we ordered last time.
是关于我们上次定购的500箱罐头食品的质量问题。
Still waters have deep bottoms.
静水常深。
How long have you been learning English?
你学英语有多久了？