She found it hard to buckle down.
她很难专心做一件
情。
She found it hard to buckle down.
她很难专心做一件情。
You can't play around with this assignment; it's something that needs to be buckled down to seriously.
这次的任务可不是儿
, 需要认去干。
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，
表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
