in an unguarded moment短语⁵⁸⁶⁸⁷ 基本例句 一不留神,一不小心 If a drop of tear appears on my face in an unguarded moment, there is no other cause but I am unwilling to forget you. 如果不经意间，我的脸上挂着一滴泪，那是因为我依然对你无法释怀。409007554.qzone.qq.com In an unguarded moment he gave away the secret. 他一时没留神泄漏了秘密。 iciba