1. The telephone rings and this marks the prelude to an unforeseen series of catastrophes.
    电话铃响了，这就揭开了未预料到的大灾难的序幕。

2. The telephone rings and this marks the prelude to an unforeseen series of catastrophes.
    电话铃响了，这就揭开了未预料到的大灾难的序幕。

3. The telephone rings and this marks the prelude to an unforeseen series of catastrophes.
    电话铃响了，这就揭开了未预料到的大灾难的序幕。

4. The telephone rings and this marks the prelude to an unforeseen series of catastrophes.
    这时电话铃响了。它预示着一连串意想不到的灾难的来临。