學霸 ：
a straight-A student
a star student
an academic star
Aily is a star student. The teacher always calls on her in class.
Aily 是個學霸。老師很常在課堂上點她回答問題。
神童；天才：
a child prodigy
a whiz
a genius
Mozart is a perfect example of a child prodigy. He started composing music at age 5.
莫札特真是個神童的完美例子。他在5歲的時候就開始作曲。
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