在最近的爆炸事件之后，航空公司说我们必须检查所有的包裹；他们告诉我们必须这么做。

After the recent bombing, the airlines said that we'd have to check all parcels; they told us we had to do it.

youdao

可以看出，这个服务器能够接收请求，因此我们必须检查虚拟主机部分，验证请求正在使用的端口有效。

As you can see, the server can accept requests, so we must review the virtual host section to verify that the port the request is using is valid.

youdao

“我们必须检查证据，看看是不是必须在濒危动物名单上把非洲象分成两个条目，”他对BBC新闻说。

"We'd have to review the evidence to see whether we need to split the African elephant into two entries on the Red List of Threatened Species," he told BBC News.

youdao

We learn nothing from examining what is going on down here in n equals one shell.

必须仔细检查不然我们学不到什么的,这里n=1的壳。

麻省理工公开课 - 固态化学导论课程节选