struggled是struggle的过去式。
struggle
vi. 奋斗，努力；挣扎
n. 努力，奋斗；竞争
struggle to do sth
She’s struggling to bring up a family alone. 她独自一人艰难地养活一家人。
[+ with]
The airline is struggling with high costs. 航空公司在努力应付高成本。
[+ for]
Millions of people are struggling for survival. 千千万万的人在挣扎求生。
[+ against]
Firms are struggling against a prolonged recession. 各公司在经济长期衰退的情况下苦苦挣扎。

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