The investigation by Xu Zhizhan et al.[1] predicts that the lasing in the Water Window (4.38-2.33nm) could be possibly realized with the Li-like recombination scheme at a large-scale high-power laser facility. Our calculations show that the wavelengths of the transitions 5f-3d and 5d-3p of Sc18+ and Ti19+ lie in the center of the water window. The fine-structures levels (n≤12, 1≤5) for these two Li-like ions and the radiative transition probabilities between tnem are calculated.