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1·I returned the letter unopened.

我原封不动地将信退了回去。《牛津词典》

2·The letter was returned unopened.

信被原封不动地退回了。《牛津词典》

3·The box sat unopened on the shelf.

盒子搁在架子上，没有打开。《牛津词典》

4·The letter lay unopened on the table.

信在桌子上还未被拆开。《柯林斯英汉双解大词典》

5·Catherine put all the envelopes aside unopened.

凯瑟琳把所有信封都放了进去，一个也没打开。《柯林斯英汉双解大词典》

6·There's a stack of unopened mail waiting for you at the house.

家里有一大堆信等你拆呢。《牛津词典》

7·The tomb was unopened and contained many invaluable items, such as the Golden Larnax.

坟墓未被开封过，有许多宝贵的东西，比如黄金赤陶棺。

8·Cloves are the rich, brown, dried, unopened flower buds of syzygium aromaticum, an evergreen tree in the myrtle family.

丁香是常青树上的棕色未开花的花蕾，气味清香，营养丰富，桃金娘科植物的一种。

9·The letter was returned to him unopened.

这封信被原封不动地退了回来。

10·It is like an unopened gift... Thrown away.

就像将一份还未打开的礼物丢弃。

未开封的

1·Prepackaged deli meats have a long shelf life if they remain unopened.

预包装好的熟食肉如果保持未开封，则有较长的货架期。

2·As they entered the home they saw stacks of unopened mail along with various books scattered about.

走进屋内，他们看到了几堆未开封的信件以及散落的各种各样的书籍。

3·In order to see and use this exciting feature you will need to open and clear out all your existing unopened Mystery Boxes as it will replace that existing icon.

为了看见和使用这个激动人心的功能，您需要打开并清除所有现有的神秘盒未开封的，因为它会取代现有的图标。

未开启的

1·One evening, as Lilly was closing up the library, her assistant bent down near the desk to retrieve an unopened envelope off the floor.

一天晚上，正当莉莉要闭馆的时候，她的助理从桌旁的地面上拾起一个未开启的信封。

2·However, I firmly believe a new friend is like a new unopened book, I wish to use my sincere opened the book's title page.

但我坚信一个新的朋友，就像是一本新的未开启的书，我愿意用我的真诚打开书的扉页。

未打开的

1·Hey, Doc, he said, pointing to the pile of unopened gauze I had brought into the room to re-dress his wound. Do you think I could have the extra?

“医生”，他说，指着我拿来的用来给他伤口换药的一堆未打开的纱布，“你认为我可以负担更多吗？