Pibal
n. 测风气球, 测风气球观察
🗣️ 情景例句
How's your son getting on with his English?
你儿子的英语学得好吗？
Excuse me I couldn't tell you beforehand.
对不起我不能事先告诉你。
The moon travels round the earth.
月球绕着地球运行。