求翻译：胃癌是我国常见的恶性肿瘤之一，在我国其发病率居各类肿瘤的首位。早期胃癌70%以上无明显症状，随着病情的发展，可逐渐出现非特异性的、类同于胃炎或胃溃疡的症状，包括上腹部饱胀不适或隐痛、泛酸、嗳气、恶心，偶有呕吐、食欲减退、消化不良、大便潜血阳性或黑便、不明原因的乏力，消瘦或进行性贫血等。当临床症状明显时，病变已属晚期。因此，要十分警惕胃癌的早期症状，以免延误诊治。是什么意思？

Gastric cancer is one of common malignant tumors in China, its incidence in our country ranks first in all kinds of tumors. More than 70% of early gastric cancer without obvious symptoms, as the disease progresses, the gradual emergence of non-specific may be, similar to the symptoms of gastritis or

Stomach Cancer is common in our country, one of the malignant tumor in my its incidence of various tumors of the top ranked. More than 70 per cent early stomach cancer without obvious symptoms, as the disease progresses, can be gradually emerging non-specificity of gastritis or gastric ulcer, simila

The stomach cancer is one of our country common malignant tumors, occupies each kind of tumor in our country its dise

Malignant tumor of gastric cancer is common in China, one of the first incidence of various types of cancer in China. 70% than no obvious symptoms of early gastric cancer, with the development of the disease may gradually appear non-specific, similar to symptoms of gastritis or gastric ulcers, inclu