Meaning of àn shí:
àn shí
按时
Adverb
on time; before deadline; on schedule
Tā zǒng shì àn shí wán chéng rèn wù.
他总是按时完成任务。
He always completes tasks on time.
Qǐng quèbǎo nǐ ànshí wánchéng zuòyè.
请确保你按时完成作业。
Please make sure you complete the homework before the deadline.
Wǒmen bìxū àn shí wánchéng zhè xiàng rènwù.
我们必须按时完成这项任务。
We must complete this task on schedule.