| Bad news is always hard but bad news on a beautiful sunny morning seems doubly burdensome. |
| Retailers are engaged in a race to the bottom where customers are doubly compromised. |
| Most of the crystals were standing on the quartz matrix, but a number were lying flat and were doubly terminated. |
| In 1834 Jacobi proved that if a single-valued function of one variable is doubly periodic then the ratio of the periods is imaginary. |
| Terns and eiders had been disturbed, while eiders had been doubly hit because the pickers were depleting the mussel beds on which they feed. |
| Our ability to detect doubly recombinant chromosomes depends on the genotype of the homolog after fertilization. |
