Radiolabeled
v. 用放射性同位素给…示踪或做标记( radiolabel的过去式和过去分词 )
🗣️ 情景例句
when I was about eighteen years old.
那时我差不多十八岁。
It is a long lane that has no turning.
路必有弯。
For example, you can send information abroad immediately, but mailing a letter might take a week or so.
例如，你能够马上发送信息到国外，但寄一封信可能要大约一周的时间。