Understable
欠稳定的
🗣️ 情景例句
Which tourist attractions are the best?
哪一个旅游景点最好？
Our packing charge includes $1 for the drum, which sum will be credited on return.
包装费中有1美元是包装桶的费用，此费用在桶还给我们时可退回。
The weather was very cold, and many people were ill.
天气非常冷，很多人生了病。