Definition: the system by which letters and parcels are taken and brought Level: A2
我妈妈喜欢通过邮件寄送礼物。
My mum likes to send gifts by ___mail.
我今天在邮件中收到一封重要的信。
I received an important letter in the ___mail today.
你回家时请查看一下邮件。
Please check the ___mail when you get home.
