Language transfer is more likely to occur at lower levels of proficiency than at the advanced level.

目的语水平较低者比较高者更有可能产生语际迁移。

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The ability to verify code as type-safe enables the common language runtime to provide as great a level of isolation as the process boundary, at a much lower performance cost.

由于公共语言运行时能够验证代码是否为类型安全的代码，所以它可以提供与进程边界一样大的隔离级别，而其性能开销则要低得多。

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The paper points out that though these theoretical bases can somewhat explain the language norm, they are at a lower level and have some deviations and limitations.

语言规范的原则可以大别为二，一个是理性原则，一个是习性原则。

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He said he hoped common sense would now prevail so that students could come into the UK to study English with a lower level in the language, equivalent to having studied it for 150 to 200 hours.

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