许多国家正在念响它们的移民法紧箍咒，企图抬高准入门槛。 它们要制定一个以熟练工为需求导向的入境体系，且为那些渴望移民成功的外来者设置这样那样的公民资格考试。
Many countries are tightening their immigration laws, shifting to a skills-based immigration system and setting citizenship tests for would-be immigrants.
在响片训练体系中，我们说一次“YES”接着就给狗儿一份奖励，我们可以在奖励的时候和奖励之后增加鼓励的口头赞扬。
In the marker system while we only say YES one time followed by a reward, we can add encouraging verbal praise during the reward and after the reward.
在响片训练体系中有两个概念。
In the marker system there are two concepts to training exercises.
在响片训练体系中这是很重要的一步。
This is a very important step in the marker training system.
因此，有必要建立一种发动机异响评价体系，客观定量的检测发动机声音，提高准确率。
Therefore, it is necessary to establish an evaluation system of engine abnormal sound that detects engine sound objectively and quantitatively and improves the accuracy.
因此，有必要建立一种发动机异响评价体系，客观定量的检测发动机声音，提高准确率。
Therefore, it is necessary to establish an evaluation system of engine abnormal sound that detects engine sound objectively and quantitatively and improves the accuracy.
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