词典
例句
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简体中文
learn sth from the ground up
learn sth the hard way
learn sth. the hard way
learn the ropes
learn up
learnability
learnable
learned
learned behavior
参考
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Wikipedia
Wiktionary
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DE↔EN LEO
DE↔EN Langenscheidt
DE↔EN PONS
DE↔EN Beolingus
DE↔EN dict.cc
learn up
➞
learn up
Definitions
[1] 尽量地学习
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learn up