0 to work hard and in a determined way, especially at something that you find difficult:
1 to keep working hard in a determined way, esp. at something that you find difficult:
中文繁体
堅持不懈地做（尤指困難的事情）…
More中文简体
坚持不懈地做（尤指困难的事情）…
MoreEspañol
esforzarse…
MorePolski
męczyć się…
MoreTürk dili
üzerinde çalışmak/uğraşmak, büyük emek harcamak…
MoreFrançais
bûcher…
MoreNorwegian
jobbe iherdig…
Moreрусский язык
корпеть, усердно работать…
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