他钻研古代文学多年了。 他鑽研古代文學多年了。 他鑽研古代文學多年了。

He has been delving into ancient literature for many years.

Simplified
他钻研古代文学多年了。
Traditional (Taiwan)
他鑽研古代文學多年了。
Pinyin
Tā zuānyán gǔdài wénxué duōnián le.
Bopomofo
ㄊㄚ ㄗㄨㄢ ㄧㄢˊ ㄍㄨˇ ㄉㄞˋ ㄨㄣˊ ㄒㄩㄝˊ ㄉㄨㄛ ㄋㄧㄢˊ ˙ㄌㄜ。

Written with HSK 7-9 vocabulary, at CEFR level C1.

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