在越南道路上行驶的车辆中，摩托车占据其中百分之九十以上，这个八千五百万人口的国家中许多工人需要依靠这种交通工具从事他们的工作。
Motorbikes account for more than 90% of the vehicles on Vietnam's roads, and many workers in the nation of 85 million need them to do their jobs.
他们发现了在他们检查的罹患胶质母细胞瘤的病人当中有超过百分之九十的人的肿瘤中存在巨细胞病毒，但这种病毒并不存在于正常的脑组织或者是非恶性的脑肿瘤中。
They discovered cytomegalovirus in the tumours of more than 90% of those people with glioblastoma whom they examined, but not in healthy brain tissue, nor in non-malignant brain tumours.
他们发现了在他们检查的罹患胶质母细胞瘤的病人当中有超过百分之九十的人的肿瘤中存在巨细胞病毒，但这种病毒并不存在于正常的脑组织或者是非恶性的脑肿瘤中。
They discovered cytomegalovirus in the tumours of more than 90% of those people with glioblastoma whom they examined, but not in healthy brain tissue, nor in non-malignant brain tumours.
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