Arcus senilis
[医] 老人弓, 角膜弓, 老人环
🧩 词语组成解析
[医] 弓
🗣️ 情景例句
I think I know you. Aren't you...?
我觉得我认识你。你是……吗？
How long does it take?
火车要开多久？
They dare not tell the truth.
他们不敢说实话。