arduously painfully
费力地痛苦
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Even though he worked painfully arduously, he still always had a smile on his face.
虽然他打工大得很辛苦，但是他总是开心的，大大笑．。
youdao
In wolves' life, nothing can take place of their unyielding spirit, which makes them survive arduously and painfully.
在狼的生命中，没有什么可以替代锲而不舍的精神，正因为它才使得狼得以千心万苦地生存下来。
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