求翻译：一些发达国家会用各种措施破坏或打破关税保护，抵制进口替代，所以进口替代战略常常出现无能为力的状态，在实践中逐渐暴露出许多缺陷。是什么意思？

Some developed countries will use a variety of measures to disrupt or break the tariff protection boycott of import substitution import substitution strategy often powerless state, gradually revealed many shortcomings in practice.

Some of the developed countries will be in a variety of measures to disrupt or break tariff protection, import substitution, So resist import-substitution strategies There are often powerless state, and in practice has gradually revealed many deficiencies.

Some developed countries can use each measure to destroy or the break tariff protection, the resisting import substitution, therefore the import substitution strategy has the helpless condition frequently, in reality exposes many flaws gradually.

A number of developed countries will use various measures to damage or break the tariff protection against import substitution, so import substitution strategies often powerless State, gradually revealed many shortcomings in practice.

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