gradually little by little
渐渐地，一点一点地
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Having said so, it gradually changed its skin color via light and shadow, and little by little it immerged on the trunk.
说完，它便借着阳光和阴影，慢慢地改变自己的肤色。于是它渐渐地在树干上隐没了。
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