n.发送人，邮寄人

原形：sender复数：senders

The sender of the email is listed in the "From" field.
发件人在"发件人"字段中列出。
She sent her son to school with a packed lunch.
她给儿子打包了午餐送去学校。
The sender was unknown, so the package was returned to the post office.
发件人不详，所以包裹被退回邮局。
The sender's handwriting was barely legible on the envelope.
发件人的笔迹在信封上几乎看不清楚。
He's the sender of the generous donation we received last week.
他就是上周我们收到的大额捐款的捐赠者。
The sender apologized for the late delivery of the package.
发件人因包裹延误而道歉。
The sender enclosed a handwritten note with the gift.
发件人在礼物中附带了一张手写的便条。
The sender's address was not clear, causing confusion at the recipient's end.
发件人的地址不明确，导致收件人一头雾水。
In online communication, the sender can use emojis to express emotions.
在网络交流中，发送者可以使用表情符号来表达情绪。
The sender of the message seems to have a strong understanding of the topic.
消息的发送者似乎对这个话题有深入的理解。