C14
[医] 碳14, 放射性同位素碳(原子量14)
🗣️ 情景例句
It's too hard to explain.
这很难解释清楚。
She failed to call the office to cancel her appointment.
她没能打电话给办公室取消她的约会。
He could hear their crying, also children's voices.
他可以听到妇女们的哭声，还有孩子们的声音。