光化性角化病，也称日光性角化病，病损生长缓慢，而且除了皮肤上的斑块或小斑点，常常无任何症状或体征。
An actinic keratosis, also known as solar keratosis, enlarges slowly and usually causes no signs or symptoms other than a patch or small spot on your skin.
“确是有一些标识，” Papakostas 说，“但问题是，如果仅盯着单一的元素，如单个标记物或病损区，那么标识性就会变弱。”
"There are some signals, " Papakostas says."The problem thus far is that if you looked at a single element, a single marker or disease area, the signal was weak."
有时最好的交易者都会出错。不要怕止损。要有纪律性并坚持你的长期交易计划。
Even the best traders are wrong sometimes. Don't get down on yourself. Be disciplined and stick to your long-term trading plan.
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