at birth同义词短语
!at birth中文意思是,生下来时,在出生时
同义词短语是be born,on your birthday 
医生们说该疾病很可能是遗传的,但在出生时是不可发现的。Doctors say the disease is probably inherited but not detectable at birth.
灰狼和红狼在出生时一般在一磅重左右。
Gray and red Wolf pups weigh about a pound at birth.
!at birth中文意思是,生下来时,在出生时
同义词短语是be born,on your birthday 
医生们说该疾病很可能是遗传的,但在出生时是不可发现的。Doctors say the disease is probably inherited but not detectable at birth.
灰狼和红狼在出生时一般在一磅重左右。
Gray and red Wolf pups weigh about a pound at birth.