  Using the $e^+e^-$ collision data collected with the BESIII detector
operating at the BEPCII collider, at center-of-mass energies from the threshold
to $4.95$~GeV, we present precise measurements of the cross sections for the
process $e^+e^-\to D_s^+D_s^-$ using a single tag method. The resulting cross
section lineshape exhibits several new structures, thereby offering an input
for coupled channel analysis and model tests, which are critical to understand
vector charmonium-like states with masses between 4 and 5~GeV.
