" Numbers alone do not win a war. You have not seen them. Half of them are dead on their feet" .

" 仅靠数量赢不了战争。你们没见过他们，半数人奄奄一息。"

At the end of each day, all of them are dead on their feet. They are so tired that they have trouble standing up.

每天工作完，他们全都精疲力竭（be dead on one's feet）。他们累到直不起身。