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1·The small roads are chock-a-block with traffic.

小路被车辆塞得满满的。《柯林斯英汉双解大词典》

2·The shelves were chock-a-block with ornaments.

架子上堆满了装饰品。《牛津词典》

3·However, there is a phenomenon I found that every time a big event or big news happens, editors mailboxes are chock-a-block with the articles which on this topic in a period of time.

然而，我发现了一个现象：每当我们的身边发生了一件新奇的或者重大的社会新闻事件，那么在此后的一段时间内，这类题材的故事作品就会源源不断地从四面八方涌入我们编辑的信箱。

4·If anybody else comes, don't let them in. The room is chock-a-block already.

如果还有其他人来，别让他们进来，房间里已经挤得满满的了。

5·The road was chock a - block with varieties of vehicles again today.

马路上今天又塞满各种车辆了。