Henry, by virtue of being assumed to be male -- although I haven't told you that he's the XY one -- by virtue of being assumed to be male is now liable to be drafted, which Mary does not need to worry about.
Henry, karena dianggap sebagai laki-laki -- walaupun saya belum menyebutkan dialah pemilik kromosom XY -- karena dia dianggap laki-laki harus menjalani wajib militer, sesuatu yang tidak perlu dikhawatirkan oleh Mary.