人的身體有上億個細胞，每天除了會代謝掉舊的細胞，還會繁殖出新細胞。在細

人的身體有上億個細胞，每天除了會代謝掉舊的細胞，還會繁殖出新細胞。在細胞繁殖過程當中，那些出錯的細胞就叫癌細胞。

結果 (英文) 1:

The human body has billions of cells every day in addition metabolized old cells, but also bred new cells.

Among cell reproduction process, the error of those cells is called cancer.

結果 (英文) 2:

The human body has hundreds of millions of cells, and in addition to metabolizing old ones every day, new cells are reproduced.

In the process of cell reproduction, those cells that go wrong are called cancer cells.

結果 (英文) 3:

There are hundreds of millions of cells in the human body. Every day, in addition to metabolizing the old cells, new cells will be produced.
In the process of cell reproduction, those wrong cells are called cancer cells.