地铁的成本和自身限制使得大多数城市都无法新建第二个地铁系统。
The cost and physical limitations of subways have discouraged most cities from building new ones.
铁路产业根据有关安全保障措施不足的调查强烈建议说，列车经过时速超过110英里的铁路道口的新建应该被合理的限制。
Industry has suggested that limiting new crossings for corridors where train speed exceeds 110 MPH may be appropriate, a suggestion underscored by the dearth of demonstrated safeguards.
多数人被限制在新建帐篷里，即便有些人附近有亲戚。
Most are confined to newly erected camps, even if they have relations nearby.
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