The food consumption tests showed that most of rats need at least 4 days to olear up suspicion and take bait boldly.

对新异物，大多数黄胸鼠需要4天以后才可能降低机警性而大胆取食。

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The food consumption tests showed that most of rats need at least 4 days to olear up suspicion and take bait boldly.

对新异物，大多数黄胸鼠需要4天以后才可能降低机警性而大胆取食。

youdao