许多物种的早期胚胎具有其祖先的特性。

Early embryos of many species develop ancestral features.

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一般的若变更电机型号则要更换6中胎具。

If the change of general motor model is to replace the 6.

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采用专用胎具焊接芯骨以保证铸孔的位置精度；

Special pattern was used to weld core iron to guarantee position accuracy of cast holes;

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很明显，同卵双生胎具有相同的基因，因此它们的变异也相同。

The identical twins, obviously, have the same genome and thus the same mutations.

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很明显，同卵双生胎具有相同的基因，因此它们的变异也相同。

The identical twins, obviously, have the same genome and thus the same mutations.

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