dai的用法和样例:
例句
- After being taken back 200 years, we were suddenly returned to the present day.
我们刚才还处在200年前的历史场景之中,一下子又回到了现在。 - She smokes 20 (cigarettes) a day.
她一天抽20支(香烟). - In a day, a doctor may write (out) 30 prescriptions for patients.
一个医生一天可能要给病人开出30张处方。 - He makes nothing of walking 20 miles in a day.
一天走20英里,他不以为是难事。