He added: "Knowing that they need nine-and-a-half hours' sleep, you should track that back from when they get up and make sure their room is dark with no TV on from then."

他补充道：“既然知道他们需要九个半小时的睡眠，你们就应该从他们起床的时间往回推算，确保在那个时间，他们的房间关了电视是黑的。”

youdao

Study participants who said they slept nine hours or longer a day were one-and-a-half times more likely than seven-hour sleepers to develop cardiovascular disease, the study found.

这项研究发现参与研究的人，每天睡超过9个小时或者更长，比睡7小时的人多了1.5倍患心血管疾病的风险。

youdao

The study found found that the subjects who said they slept nine hours or longer a day were one-and-a-half times more likely than seven-hour sleepers to develop heart disease.

研究发现每天睡9个小时或者更长时间的人患心脏类疾病的几率是每天睡7个小时的人的1.5倍。

youdao

On Easter Sunday 2011, a fever of 106 degrees, caused by numerous serious side effects from my disease, landed me in the hospital for 30 days and snowballed into two surgeries, one of which took nine and a half hours, and an unexpected five-month absence from the company I founded.

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Sidebottom eventually trapped the 24-year-old Trinidadian, the nephew of former West Indies batsman Phil Simmons, after more than nine-and-a-half hours at the crease.

BBC: Simmons punishes England bowlers