A network of railways has spread over the province.铁路网已遍布全省。Railways could now bring food to encamped armies...现在通过铁路能够给扎营部队运送食物了。The railways will carry a far higher proportion of freight traffic...铁路将承担比例高得多的货运量。Britai...
Areas of necrosis and cavitation may occur within the tumor.肿瘤内可以有坏死和成腔区.Cavitation can be caused by a variety of reasons.气穴可以由各种原因引起.The total diameter of cavitation, if present, is less than 4 cm.若出现空洞, 其直径总和小于4厘米....