Synonyms: discover, catch on to, detect, unearth
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Discover
1. 發(fā)現(xiàn)
She discovered that the man was a quack.
她發(fā)現(xiàn)那人是個庸醫(yī)。
Who first discovered America?
誰最早發(fā)現(xiàn)美洲大陸?
2. 發(fā)覺;找到
The lost bike was discovered at the bus stop.
丟了的自行車在公共汽車站那兒找到了。

Catch on to: 理解
I don't quite catch on to what she is saying.
我不太明白她在說些什么。

detect:發(fā)現(xiàn),察覺;查出,看穿
I detected anger in her voice.
我察覺出她說話聲里含著憤怒。
He soon detected the faulty valve.
他很快查到了出毛病的閥門。

Unearth: 發(fā)現(xiàn);揭露
unearth a secret
發(fā)現(xiàn)一個秘密