She worked indefatigably and enthusiastically to interest the young in music.

为了激发年轻人对音乐的兴趣，她一直孜孜不倦、积极热情地工作。

柯林斯例句

Pursue your object, be it what it will, steadily and indefatigably.

不管追求什么目标, 都应坚持不懈.

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She watched the show indefatigably.

她毫不厌倦地观看着演出.

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Have a cause, have ideal, have pursuit. Try hard indefatigably to strive for for it.

有目标, 有理想, 有追求. 并为之不懈的努力争取.

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