weigh: This infant weighed only 2 kilograms when it/he/she was born. weight: This infant's weight was only 2 kilograms when it/he/she was born. heavy: This infant was as heavy as 2 kilograms when it/he/she was born.
weight: The baby's weight was only 2 kilograms when he was born. 或者 The baby was 2 kilograms weight when he was born. heavy: The baby was as heavy as 2 kilograms when he was born.
weigh:This baby weighed only 2 kilograms when she was born. weight:Thisbaby weight was only 2 kilograms when she was born. heavy:Thisbaby was as heavy as 2 kilograms when she was born.