sealed envelopes

sealed envelopes 基本解释

密封信封

sealed envelopes 用法和例句

1、A courier was despatched with two sealed envelopes.

信使受命递送两封封讫的信。

2、The letters refer to those carriers which transit information by using sealed envelopes.

信函是指以套封形式传递的缄封的信息的载体。

重点词汇

sealed adj. 未知的，密封的 v. 密封( seal的过去式和过去分词 )；决定；确定；封上（信封）

envelopes n. 信封( envelope的名词复数 )