Be at mercy of sb/sth

Question

معنی این ساده عبارت همراه با چند مثال؟ 

 

Comments

http://chimigan.com/87097/Mercy-%D8%B3%D9%84%D8%A7%D9%85-%D9%85%D8%B9%D9%86%DB%8C

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be at the mercy of (something)
To be subject to the control of a particular person or thing.
When you're a minor, you're at the mercy of your parents completely.
When you travel by public transportation, you're at the mercy of the weather.
Her fate is at the mercy of the jury—it's their decision now.

(در دست، در اختیار، اسیر، دستخوش) چیزی/کسی بودن