indefatigably
adv. 不厌倦地；不屈不挠地
例句
She worked indefatigably to interest children in music.
她孜孜不倦、积极热情地致力于激发孩子们对音乐的兴趣。
《柯林斯英汉双解大词典》
She seemed gentle, yet indefatigably determined to survive.
她看上很温和，却不屈不饶地对抗生存问题。
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。
