Precondition : Ella is 15 month old. She doesn't have the habit to raise her hands up while walk her steps. This habit can keep baby safe while learning walking.
目前状况：语柔15个月大了，她还没有养成举双手走路的习惯（这样对初学步者比较安全）。
Precondition : Ella is 15 month old. She doesn't have the habit to raise her hands up while walk her steps. This habit can keep baby safe while learning walking.
目前状况：语柔15个月大了，她还没有养成举双手走路的习惯（这样对初学步者比较安全）。
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