汉译英作业

乳癌发生在左胸比右胸更常见。

左胸比右胸有5 - 10%的更多可能形成癌变。人的身体左侧也有10%的机率更容易患上黑色素瘤(一种皮肤癌)。没人确切地知道这是为什么

Breast cancer typically occurs more often in left chest than right chest. The possibility of cancer development is also 5-10% higher in left chest as comparison to right chest. Smilarly, melanoma, a type of skin cancer, occurs with a possibility of 10% higher on human’s left side than the right side, with unknown reason. 

But I believe the reason is related to the asymmetric organ location in human body: such as heart is on the left side but liver on the right side.