1 the supply of people who are able to work: --
For years there was a shortage of manpower in engineering.
2 the supply of people who are able to work or who are needed to do a particular job: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.