发送明文信息是不安全的。

Sending plaintext messages is not secure.

他喜欢从旅行中发送明信片。

He enjoys sending postcards from his travels.

我需要在发送之前扫描这份文件。

I need to scan this document before sending it.

他被发现向陌生人发送裸体照片。

He was caught sending nudes to strangers online.

发送短信比打电话更快。

Sending a text message is faster than making a phone call.