Verp
[医][=ventricular effective refractory period]心室有效不应期
🗣️ 情景例句
about leaving New York, the family, and friends.
对于离开纽约， 家人和朋友。
Don't forget to put stamps on the letter.
不要忘记在信封上贴邮票。
No, I think it'll be all right for him to go to school.
不，我想他去上学没什么关系。