The adverb 不料 "suddenly"
The adverb 不料 
is used when something happens against expectations.
不断 is usually placed before a subject or a predicate at the beginning of the second part of a complex sentence.
is used when something happens against expectations.
不断 is usually placed before a subject or a predicate at the beginning of the second part of a complex sentence.Examples
我好心安慰她，不料却被她骂了一顿
I was comforting her out of the goodness of my heart, but she suddenly scolded me
wǒ hǎoxīn ānwèi tā, búliào què bèi tā mà le yí dùn
我只是开玩笑了，不料她居然生气了
I was just joking, and she suddenly got angry
wǒ zhǐshì kāiwánxiào le, búliào tā jūrán shēngqì le
她开上自家车道，不料发现路已被堵
She drove into the driveway leading to her house, and was surprised to find that the road wasblocked
tā kāi shàng zìjiā chēdào, búliào fāxiàn lù yǐ bèi dǔ