Tom and Jim's bedroom
就是两个共有的.
Tom's and Jim's bedrooms 就是分别的.
something of Tom and Jim's 就是两人共有.
或可以说:something belongs to both Tom and Jim
Tom and Jim's bedroom
就是两个共有的.
Tom's and Jim's bedrooms 就是分别的.
something of Tom and Jim's 就是两人共有.
或可以说:something belongs to both Tom and Jim