Meaning of fā jué:
发觉
to become aware; to detect; to realize; to perceive
Wǒ zuìjìn fājué tā de xíngwéi yǒudiǎn qíguài.
我最近发觉他的行为有点奇怪。
I recently became aware that his behavior is a bit strange.
Tā zhōngyú fājué yǒurén zài gēnzōng tā.
他终于发觉有人在跟踪他。
He finally detected that someone was following him.
Wǒ fājué zìjǐ wàng dài yàoshi le.
我发觉自己忘带钥匙了。
I realized I forgot to bring the keys.
Wǒ jīntiān cái fājué zhè běn shū fēicháng yǒuqù.
我今天才发觉这本书非常有趣。
I just perceived today that this book is very interesting.