If LW Continous Translation is enabled, there should be a "ENTER SENDS" option.

I would like to see the option to spare the system some ressources and wait to start "Continously translating" until I  enter "ENTER" button. 
Or , if you rightfully object that it would then no longer be "Continous translation"  -   that  you in stead implement the option to let "ENTER" equal the cumbersome procedure:  "letting go of the keyboard, grabbing the mouse to click the Translate button".