Use of 'the only' for 'not unique' things :)

[Tamara]

Hi

Could you say, is it possible in English to use ‘the only’ when referring to more than one 'things'?

For example, can I say: Mary and Jane are the only girls in the group.

?
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It’s impossible to learn swimming without entering the water…

[Alan]

Hi,

Yes, you can. I went to the supermarket to buy some some bananas and the only ones they had were very green It seems at the moment that you and I are the only members online

A
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English as a Second Language
You can read my ESL story Saying It Twice

[Tamara]

Hi Alan

Thanks.

In some languages it's not possible (not correct).
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It’s impossible to learn swimming without entering the water…