We need to plant trees, lots of trees.
我们要多种树，种很多很多树。
They need to feel they are important and loved.
他们需要感受到自己是重要的且是被爱着的。
We need to drink six to eight glasses of water a day.
我们每天需要喝六到八杯水。
It means we need to keep temperature increases below 1.5℃.
这意味着我们需要将升温幅度控制在1.5℃以下。
To find out, scientists need to know if Mars ever had water.
为了找到答案，科学家们需要知道火星上是否曾经有水。
To make our city more beautiful, we need to plant more trees.
为了使我们的城市更美丽，我们需要种植更多的树。
Speakers need to remember that the audience wants them to succeed.
演讲者需要记住，观众想要他们成功。
To win their trust, you always need to be straight with your children.
为了赢得孩子的信任，你需要一直与他们坦诚相待。
To fight climate change, countries around the world need to work together.
应对气候变化需要世界各国携手合作。
Someone may not see the rose in himself, so we need to help him discover the rose.
有些人可能看不到自己身上的玫瑰，所以我们需要帮助他发现自己的那朵玫瑰。
Growing up means that we need to face up to our responsibilities to our family and the society.
成长意味着我们需要正视自己对家庭和社会的责任。
We need to remember that what we see on social media is often not the whole truth about a person.
我们需要记住，我们在社交媒体上看到的往往不是一个人的全貌。
Even an Olympic medal wouldn't make me prouder! I think children need to know that they are loved.
即便是一枚奥运奖牌也不会让我更自豪！我认为孩子们要知道他们是被爱着的。
My doctor told me that I need to cut down on eating fried foods in order to improve my cholesterol.
我的医生告诉我，为了降低我的胆固醇，我需要少吃油炸食品。
Teacher's aides need to prepare materials, help children finish activities and create a safe environment.
助教需要准备材料，帮助孩子完成活动并营造安全的环境。
We need to help our children learn how to best work with smart computers to improve human decision-making.
我们需要帮助我们的孩子学习如何最好地与智能电脑合作，以提高人类的决策能力。
Few of us wish to turn the clock back, but perhaps we need to remind ourselves how useful the right obstacles can be.
很少有人希望时光倒流，但或许我们需要提醒自己，适当的障碍是多么有用。
If parents want to be part of that free time, they need to see that playing on computers can be a fun family activity.
如果家长们想要融入这些空闲时间，他们需要明白，玩电脑可以成为一种有趣的家庭活动。
Our parents are still growing into qualified fathers and mothers, so we need to understand and forgive them sometimes.
我们的父母也在逐渐成长为合格的父亲和母亲，所以有时候我们需要理解并原谅他们。
Holland, one of the writers of the study, says, "I believe there is hope, but humans need to act quickly to make that hope come true."
该研究的作者之一霍兰德说：“我相信有希望，但人类需要迅速行动，让希望成为现实。”
About 75% of the world's population will live in cities by 2050, so cities will need to be more modern to deal with the coming problems.
到2050年，全球约75%的人口将居住在城市，因此城市需要更加现代化才能应对未来的问题。
The bottom line is that you need to study, eat a good meal, sleep well on the eve of the test, and believe that your efforts will pay off.
底线是你需要在考试前夕学习，吃好饭，睡好觉，并相信你的努力会得到回报。
During your child's first year in school, much time will be spent in learning to read and they need to know that this is fun and worthwhile.
在您孩子上学的第一年，很多时间将花在学习阅读上，他们需要知道这很有趣，很有价值。
To achieve the economic expansion we all seek, we need to unlock a vital source of growth that can power our economies in the decades to come.
为实现我们所寻求的经济增长，我们需要开启一个能使我们的经济在未来数十年中获得动力的必不可少的增长源泉。
If you want to be a Junior Ranger, you need to learn about the natural and cultural history, and make a promise to be a national park protector.
如果你想成为一名初级护林员，你需要了解自然和文化历史，并承诺成为一名国家公园保护者。
Parents tend to believe that they need to provide their children with good living conditions, but the most important thing for a child is the company of parents.
父母往往认为他们需要为孩子提供良好的生活条件，但对孩子来说最重要的是父母的陪伴。
We need to foster an awareness of film sound as well as film space so as to truly appreciate an art form that sprang to life during the twentieth century — the modern film.
我们需要培养对电影声音和电影空间的认识，以便能真正欣赏一种在二十世纪蓬勃发展起来的艺术形式——现代电影。
We need to make clear the connection between animal research and a grandmother's hip replacement, a father's bypass operation, a baby's vaccinations, and even a pet's shots.
我们需要弄清楚动物研究与祖母的髋关节置换手术、父亲的搭桥手术、婴儿的疫苗接种、甚至宠物的疫苗接种之间的联系。
It is important to point out that students also need to have a deep understanding of their own culture before they can begin to observe, analyze and evaluate other cultures.
需要指出的是，学生在开始观察、分析和评价其他文化之前，也需要对自己的文化有一个深刻的理解。
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