The gravity model explicitly relates flows between zones to interzonal impedance to travel.
重力模型明确的通过地区间的阻抗来将分布量和小区联系起来。
行；步行；行进；[口]交往
…行；经过行；
历；漫
行，也指水上或空中的行。途中有停
点，距离可长可短，目的各异的周或巡行。行的行为而不指某次具体的行，
指到远方作长期行，不强调直接目的地，单、复数均可用。用，常指为公务或玩作的较短暂的行。
水上行，尤指海上行，也可指空中行。玩，也可指乘火车或轮船往返特定景点的远足。
处停靠。行的;行;行;行者;行经验的;行计划，行程表;行推销；四出兜销行社；服务行；空中行行社；行代理人，行代办人世界；周世界；环球行行，宇宙航行行保险；行保险行，时空之行需求；运需求费用The gravity model explicitly relates flows between zones to interzonal impedance to travel.
重力模型明确的通过地区间的阻抗来将分布量和小区联系起来。
It is expensive to travel by plane.
坐飞机行很费钱。
There may be travel expense, as well.
可能还有途费用。
He reacted ecstatically to my plan to travel to Africa.
他对我去非洲行的计划表现出极大的兴趣。
The prince travelled incognito to avoid crowds and ceremonies.
王子微服行以避开人群及避免欢迎仪式。
She resented having the child foisted on her while the parents went travelling abroad.
她对孩子的父母出国行卻硬要她来照看孩子这事很反感。
Early experiments with military rockets prepared the ground for space travel.
早期军用火箭的试验为太空飞行奠定了基础。
This preferential ticket entitles you to travel first class.
"凭这张优惠票,你可以坐头等舱行。"
They travel to the nearest town on Saturdays for shopping or on Sundays for church.
他们星期六到最近的镇上去购物,星期日去教堂。
One of his quirks is that he refuses to travel by train.
他的怪癖之一是不愿乘火车行。
The cost of the ticket is proportionate to the distance you travel.
票价和行的距离是成比例的。
We're planning to travel round the globe.
我们正计划做一次环球行。
He received reimbursement for his travel expenses.
由于出差的花费，他可以得到公司的补偿。
We’ll reimburse you for your travelling expenses.
我们将付还你费。
He recouped his travelling expenses from his employers.
他向老板报销了他的费。
Many of the city’s populace travel to work by subway or bus.
许
城市的平民都是坐地铁或公共汽车上下班。
They advised the government not to issue him a passport to travel abroad.
他们奉劝政府不要给他发护照出国。
Citizens of the EU can travel without restriction within the EU.
欧盟的公民欧盟境内可以不受限制地出入各国。
New high-speed trains are pointing the way to a new age of European travel.
新的高速火车引领了欧洲行的新时代。
It once seemed inconceivable to everyone that men should travel to the moon.
"人们一度认为,人飞上月球似乎是不可想象的。"
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