melanomas

Melanomas are the most aggressive skin cancers.

黑色素瘤是最具侵蚀性的皮肤癌。

Melanomas are more common if you have periodic intense exposure to the sun.

如果你定期暴露在强烈的阳光照射下，黑色素瘤会更常见。

A 2011 Australian study of 1,621 people found that people randomly selected to apply sunscreen daily had half the rate of melanomas of people who used cream as needed.

2011年，澳大利亚针对1621人进行的一项研究发现，每天随机选择涂抹防晒霜的人患黑色素瘤的几率是按需使用防晒霜的人的一半。

There is continuing debate as to how effective sunscreen is in reducing melanomas—the evidence is weaker than it is for preventing other types of skin cancer.

关于防晒霜是否能有效减少黑色素瘤，争议仍然存在——相较于预防其他皮肤癌，防晒霜能减少黑色素瘤的证据还不充分。

Irregularly shaped brown or blue spots in the nail bed can be melanomas.

甲床上不规则的棕色或蓝色点可能是黑索瘤。