second leg at reach
/ˈsɛkənd ˈlɛɡ at ˈɹiːtʃ/
n
中文：第二段横风航程
Meaning：The sailboat first navigates the beam reach with the wind on the starboard side until the third buoy (first leg at reach), then sails a second straight line to the beam reach with the wind on the port side.