He's maturing as slow as molasses, but he is a maturing character.

他成熟的过程慢的像蜗牛一样，但是他是个成熟的角色。

youdao

The wireless sector is maturing, with very slow growth.

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Looks like another case of maturing high-flier syndrome: As its earlier galloping growth begins to slow, investors are starting to wonder what Gilead plans to do for a second act.

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