This behavioral asymmetry is thought to stem from the same preference for head turning during the final weeks of gestation and during infancy.

这种方向上的不对称性似乎是源于妊娠后期及婴儿期转头的偏好。

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And, sure enough, they found these characteristics in abundance and noticed that all the strains seemed to stem from wild ancestors that lived 500 years ago.

从这一点出发，他们果真发现了许多这类特征，并且还发现似乎所有的菌种都源自于500年前的野生菌种。

youdao

And, sure enough, they found these characteristics in abundance and noticed that all the strains seemed to stem from wild ancestors that lived 500 years ago.

从这一点出发，他们果真发现了许多这类特征，并且还发现似乎所有的菌种都源自于500年前的野生菌种。

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