他们一度难以维持生计 They struggled to support themselves
有些教师觉得难以维持课堂秩序。
Some teachers find it difficult to keep their classes in order.
正是因为劳动力空前空缺，使得大规模经营难以维持，农民才推动了这一进步。
It is farmers that are pushing for the advancements due to ever-increasing labor vacancies, making it difficult to maintain large-scale operations.
令人遗憾的是，德川幕府对政府偿付能力的寻求，使靠固定津贴生活的日本人越来越难以维持生计。
Regrettably, the Tokugawa shoguns' search for solvency for the government made it increasingly difficult for individual Japanese who lived on fixed stipends to make ends meet.
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