那就是每个要再花300元。
MIME类型和其他元数据在写入之后就不能再更改——您必须删除并重新创建该项。
The MIME type and other metadata can't be changed once written-you have to delete and recreate the item.
利用血液去培育干细胞获得成功以后,朱敏设法诱导它们分化成三种细胞系:先是骨骼和软骨细胞,然后是肌细胞,再是神经元。
Using blood to nourish and grow the stem cells, Zhu managed to induce them to differentiate into three lineages: first bone and cartilage, then muscle, and then neuron.
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