胆大

dǎn dà bāo tiān

胆大包天

audacious in the extreme

dǎn dà xīn xì

胆大心细

bold but cautious

yī gè dǎn xiǎo ér wēn shùn lìng yī gè zé dǎn dà ér xiōng měng

一个胆小而温顺，另一个则胆大而凶猛。

The one is shy and gentle and the other is bold and fierce.