Correct

透底

/ tòu de / 
Strokes

Example

As a Verb

reveal the ins and outs of the matter; disclose the inside story; reveal the bottom line

1
Tā
他
wánquán
完全
xìnrèn
信任
wǒ
我
  
,
cái
才
gěi
给
wǒ
我
tòu
透
le
了
gè
个
de
底
  
。

He had perfect trust in me and told me everything.