The virus infects people by locking onto ACE2, a protein found on the surface membranes of certain cells-particularly those of the airways into the lungs.

这种病毒通过与ACE2结合而感染人类。ACE2是一种蛋白质，存在于某些细胞的细胞膜表面，尤其是那些进入肺部的气道。

The toxin molecules attach themselves to a protein called synaptotagmin, which is found on the surface membranes of nerve cells at their junctions with muscle cells.

这种毒素能结合到一种叫做synaptotagmin（SYT）的蛋白上，SYT则位于神经肌肉接头处神经细胞的细胞膜表面。