Brain tumors can be categorized by their primary site location as either supratentorial, or infratentorial tumors – though some tumors can form in either.

脑肿瘤可以根据它们的原发部位分类为脑幕上或脑幕下肿瘤，某些肿瘤可以同时位于脑幕上和脑幕下。

Metastasis is a spread of cancer from a primary site to a distal site, through the circulatory or the lymphatic system.

转移是癌症通过循环系统或淋巴系统从原发部位扩散到远端部位。

A biopsy, together with advanced imaging technologies, may not only confirm the presence of cancer, but may also pinpoint the primary site and secondary site(s).

活组织检查以及先进的成像技术不仅可以确认肿瘤的存在，还可以确定原发灶和转移灶。

The site refers to the location of the cancer within the body. The body part in which cancer first develops is known as the primary site.

该部位是指肿瘤在体内的位置。肿瘤首发的身体部位被称为原发灶。

A cancer's primary site may determine how the tumor will behave; whether and where it may spread (metastasize) and what symptoms it is most likely to cause.

肿瘤原发灶可能决定肿瘤的表现; 它是否以及在何处蔓延（转移）以及最可能引起的症状。

Malignant tumor cells can get into nearby blood or lymph vessels, and travel from the primary site to establish a secondary site of tumor growth somewhere else in the body - and that's called metastasis.

恶性肿瘤细胞可以进入邻近的血管和淋巴管，从原发病灶到达身体的其它地方，形成继发病灶，称之为转移。

French Guiana is immensely important to both France and Europe today because it is the primary launch site for rockets of the European Space Agency or ESA, and it's specifically because of French Guyana's geographic location.

法属圭亚那如今对法国和欧洲都非常重要，因为它是欧洲航天局火箭的主要发射场，这尤其是由于法属圭亚那的地理位置。