You cannot afford to relax your concentration for a moment.
你必须集中精力，一刻都不能松懈。
Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton.
根据浮游植物的种类和浓度，海洋颜色有从绿色到蓝色不等。
This book requires a great deal of concentration.
这本书需要全神贯注才能读懂。
She was possessed of exceptional powers of concentration.
她有高超的专注能力。
Chess is a game that calls into play all your powers of concentration.
国际象棋是一项需要全神贯注的活动。
Breakfast is also associated with improved brain function, including concentration and language use.
早餐还能增强大脑功能，包括专注力和语言运用能力。
Scientists use these changes in ocean color to estimate chlorophyll concentration and the biomass of phytoplankton in the ocean.
科学家利用海洋颜色的变化来估计叶绿素含量以及海洋浮游植物的生物量。
Most children believe that more space should be given to real-life communication, which could boost honesty, trust and concentration.
大多数孩子认为，应该给现实生活中的交流更多的空间，这样可以促进诚实、信任和专注。
However, one of the review's researchers, Mary Beth Spitznagel, says there is "reasonable" evidence that breakfast does improve concentration—there just needs to be more research.
然而，该综述的研究人员之一玛丽·贝丝·斯皮兹纳格尔表示，有“合理的”证据表明早餐确实能提高注意力——只是还需要更多的研究。
All these activities can prevent the growth of important communication and thinking skills and make it difficult for kids to develop the kind of sustained concentration they will need for most jobs.
所有这些活动都会阻碍重要的沟通和思考技能的发展，使孩子们很难培养出大多数工作所需要的那种持续的专注力。
She frowned with concentration.
她全神贯注，紧锁双眉。
Her brow furrowed in concentration.
她眉头紧锁全神贯注。
His face was a study in concentration.
他脸上完全是一副全神贯注的表情。
Total concentration is required with no distractions.
需要全神贯注，不可有分心之事。
Listening well requires total concentration upon someone else.
认真聆听需要完全专注于他人。
I will lose concentration when I can't understand what the teacher is saying.
当我听不懂老师在说什么时，我就会走神。
One thing that can hold joy back is a person's concentration on avoiding failure rather than their looking forward to doing something well.
有一件事会抑制快乐，那就是一个人专注于避免失败，而不是期待把事情做好。
He wrinkled his brow in concentration.
他全神贯注地锁紧眉头。
I had a little lapse of concentration in the middle of the race.
我在比赛中走了一下神。
Most astronomers believe that the large concentration of mass at the galaxy's center is a black hole whose gravity is causing the gas to whirl.
大多数天文学家认为，星系中心的大量物质是一个黑洞，它的引力导致气体旋转。
Most American universities insist that students sample natural and social sciences, languages and literature before choosing a field of concentration.
大多数美国大学坚持要求学生在选择专业之前，必须先学习自然科学、社会科学、语言和文学。
She wrinkled her brows in concentration.
她蹙额皱眉，陷入沉思。
Chess requires great concentration.
下棋需要全神贯注。
The great successes of life are made by concentration.
伟大的成就都是由专心造就的。
With deep concentration she stands still as a statue.
Neytiri精神高度集中，如同雕像般一动不动的站着。
Not every class is going to require your utmost concentration.
不是每一节课都需要你全神贯注。
Sleep is essential for your energy, concentration and complexion.
睡眠对于人的精神、注意力和脸色都是至关重要的。
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