生物学方面
A cell is the basic unit of life.细胞是生命的基本单位。
A cell is the smallest structure that can live and reproduce.细胞是能够生存和繁殖的最小的结构。
Cells grow and develop, reproduce and interact with the environment.细胞生长、发育、繁殖并与环境相互作用。
Photosynthesis is one of the most important biological processes.光合作用是最重要的生物过程之一。
It allows plants to capture and use light as an energy source.它允许植物捕捉和利用光作为能源。
Photosynthesis is the process of converting light energy into chemical energy.光合作用是把光能转化为化学能的过程。
A virus is a small biological structure that attacks and enters cells.病毒是一种攻击并进入细胞的小型生物结构。
Once inside a cell, a virus reproduces and makes many copies of itself.一旦进入细胞，病毒就会自我复制并复制很多次。
Some diseases such as influenza are viruses.有些疾病如流感是病毒。
Bacteria are one-celled forms of life that are all around us.细菌是生活在我们周围的单细胞生物。
Although they have a single-cell structure, they are very important.虽然它们是单细胞结构，但它们非常重要。
Many bacteria are inside us and help us digest our food.许多细菌在我们体内帮助我们消化食物。
DNA is a complex molecule that stores information and can make copies of itself.DNA是一种复杂的分子，它可以储存信息并复制自己。
Nearly every cell in a person's body has the same DNA.几乎每个人体内的细胞都有相同的DNA。
The information stored in DNA tells cells what to do, and is necessary for reproduction.储存在DNA中的信息告诉细胞该做什么，这是繁殖所必需的。
Many bacteria are inside us and help us digest our food.许多细菌在我们体内帮助我们消化食物。
cells are often called the building blocks of life 细胞通常被称为生命的基石
there are billions of bacteria in our intestines我们的肠道里有数十亿的细菌
some bacteria are very dangerous and can caouse disease有些细菌非常危险，会引起疾病
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