sending a message
sending an email
sending a gift
sending money
sending a signal
A: Have you finished sending the invitations?
A：你发完请帖了吗？
B: Not yet, I am still sending a few more.
B：还没有，我还在发最后几个。
1) 正在发送
2) 发送行为
3) 寄送状态
1. 发送，寄送
present participle / gerund
1. The act of causing something to move from one place to another.
Synonym: transmitting, conveying