yi1 hui2 sheng1 , er4 hui2 shu2 :: ZWBit Chinese Character and PinYin Dictionary

ZWBit汉字-拼音字典

Pinyin Simplified Chinese	English	Traditional Chinese
yīhuíshēng,èrhuíshú 一回生，二回熟^字	lit. at first raw, later ripe (idiom); unfamiliar at first but you get used to it; strangers at first meeting, but soon friends; awkward at first but becoming skillful later; an acquired taste;	一回生，二回熟^字