Since the remote file may not exist yet, we need to catch the exception that Net: : SFTP will throw when we try to determine its timestamp.

由于远程文件可能不存在，所以我们需要捕捉当我们试图去查看一个不存在的文件的时间戳的时候Net： SFTP抛出的异常。

youdao

If the moth-hunter would throw down his net, and go hunting for ghost tales or tales of the faeries and such-like children of Lillith, he would have need for far less patience.

不过，倘若捉飞蛾的人扔下手中的网兜，转而去聆听有关鬼魂、仙人和利利斯的孩子之类的故事，他对村子的故事也许会了解得更快。

youdao

I waited for 20 minutes or so for him to throw his net, then fired off four shots.

我等待了至少20分钟，等到他撒网，我连拍4张。

youdao

Investors eager to own that growth pay at least 25 times what the buildings throw off in net rent.

FORBES: The U.K. has joined the REIT revolution. Buy sparingly.

As Henry's free throw swished through the net on the front end of a one-and-one, Richmond's Derrick Williams and the 49ers' Willie Clayton became entangled setting up for a potential rebound.

WSJ: Charlotte stuns Richmond at A-10 tourney 68-63

Back came the hosts and they came close to an equaliser soon after the interval as Samba nodded on a long throw and would have found the net had it not been for the well-positioned substitute Yuri Zhirkov, who cleared the danger from the line.

BBC: El-Hadji Diouf celebrates his equaliser