Constraint equation
[计] 约束方程
🧩 词语组成解析
🗣️ 情景例句
Who wants to begin?
谁先开始？
We'll start with an orientation video. It runs about 15 minutes.
我们将从一个电视简报开始，大概放15分钟。
Their sleeping bags were warm and comfortable, so they all slept soundly.
睡袋既暖和又舒服，所以，他们都睡得很香。