The tariff barriers that are put up to repel this invasion are like the tanktraps, trenches and barbed-wire entanglements created to repel or slow down attempted invasion by a foreign army.
设立关税壁垒以击退舶来品的入侵，就像布设坦克陷阱、战壕、铁丝网，用以抵御或延缓敌军的攻势。
2
This system traps the gasoline vapor escaping from the fuel tank and carburetor.
这个系统能收集从燃油箱和化油器泄漏出来的汽油蒸气。
3
This system traps the gasoline vapor excaping from the fuel tank and carburetor.