The play continued for a few minutes, and then suddenly, without any warning, Harlequin stopped talking.

戏演了几分钟，突然，哈利昆毫无预兆地停止了说话。

youdao

Suddenly without warning a large deer came over the hill and was standing looking straight at me.

突然在没有任何预兆的情况下，一只巨大的鹿跑过山头，站在那里直直的望着我。

youdao

As grains build up, the pile grows in a predictable way until, suddenly and without warning, it hits a critical point and collapses.

当沙砾慢慢增加，沙堆一直在预料的方式中成长，直至突然而又毫无警戒地，它到达了一个临界点然后崩塌了。

youdao

Suddenly,without warning, a heavy mass of snow dropped down.

VOA: special.2010.05.01

What looked to be a frightening rout was transformed suddenly and without the slightest advance warning into a huge rally as hundreds upon hundreds of gigantic buy orders, all 1 million shares or more in size, poured into electronic trading systems at Credit Suisse and several other major trading firms.

FORBES: Watch Out For The Quants