However, research on perception training for non-native vowels is still scarce, and none of the previous vowel studies trained more than 5 vowels.

然而，迄今为止针对非母语元音感知训练的研究仍然很少，以前的元音研究中元音训练都不超过5个。

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Although pigeons have shown remarkable feats of perception when given training in the lab, the new study is the first research showing similar abilities in untrained feral pigeons.

虽然在实验室里受过训练的鸽子可以表现出超强的感知能力，但是这项新的研究是第一次针对未经训练的野生鸽子。实验表明它们具有同样的能力。

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The positive mental characters should be mainly fostered in the mental quality training; its core is the construction of the positive perception scheme.

对新民警的心理素质训练应当以积极心理品质的培养为主，其核心是积极认知图式的构建。

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Arriving early to spring training is as much about perception as it is about a few extra grounders and swings in the batting cage.

WSJ: On Time? You're Late