heavy machinery
I don't operate heavy machinery, but it has to do with the type of work I do.
Heavy machinery might be the cement truck that's in this picture, it could be a forklift, but it has to do with the type of work that he does. Other types of people who work in construction are electricians, architects, and plumbers.
has to do with ... ~とつながりがある・関わりがある
machinery /mə’ʃiːnəri/ noun [uncountable]
★ machines as a group, especially large ones
・agricultural /industrial machinery
・a piece of machinery
plumber /'plʌmər/ noun
★ a person whose job is to fit and repair things such as water pipes, toilets, etc.
・I think we'll have to call the plumber to fix that tap.
heavy /'hevi/ adjective
cement /sɪ'ment/
truck /trʌk/
forklift
electricians
tap /tæp/ n)蛇口