| 单词 | 进展也缓慢 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔plug away〕Despite the difficulty of the task,and the slowness of the progress,the workers continued to plug away at it manfully.尽管任务很艰巨，进展也缓慢，工人们仍顽强果断地继续干着。21世纪英汉 |
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