Because skill development is a long process.

因为技能开发是个长期的过程。

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Objective: To explore the process of genesis and development of long bone of human fetus.

目的探讨人胚胎长骨的发生及发育过程。

youdao

Objective: To explore the process of genesis and development of long bone of human fetus.

目的探讨人胚胎长骨的发生及发育过程。

youdao