Obviously, any child who receives dedicated teaching over an extended period is likely to improve.

很明显，任何接受了很长时期用心教导的儿童都可能会进步。

《柯林斯英汉双解大词典》

Defence planners predict an extended period of retrenchment.

国防规划人员们预计，开支紧缩期会延长。

《柯林斯英汉双解大词典》

A whale's muscles and non-vital organs are able to function without oxygen for an extended period of time.

鲸鱼的肌肉和非重要器官能够在长时间缺氧的情况下正常工作。

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for an extended period." Low interest rates and growing federal deficits have weakened the dollar.

VOA: special.2009.11.06

but over an extended period of time.

而是持续一段时间的事情。

I'm ~ing 课堂 - SpeakingMax英语口语达人

When a baby's head is stuck in the birth canal for an extended period of time, it cuts off the blood supply to the woman's surrounding organs.

VOA: special.2010.08.09

Nevertheless, the extended period of low borrowing costs has bred a new breed of investor.

FORBES: Rising Rates Reveal Debt Reality

It may be that lower gasoline prices over an extended period can boost the national economy.

FORBES: Don't Cut The Gas Tax For Summer Holidays, Double It

They would have to prove they've been here for an extended period of time.

WSJ: The Weekend Interview with Marco Rubio: Riding to the Immigration Rescue