大停顿// 小停顿/ bold 加强语气

Your body is composed of由…组成 trillions兆 of cells细胞/ – lots of different types of cells that make up构成 different organs器官 and other parts of your body.// Your body is also where 10 times that number of bacteria细菌 call ‘home sweet home.’// But don’t be afraid/ – these bacteria do more good than harm to you.// And besides, just in case you wanted to strike up开启 a conversation对话 with your tenants租户,/ you and your bacteria do have a few things in common有共同点.