"De ingenieur is efficiënt."
Translation:The engineer is efficient.
The computer voice sounds a bit odd. But also keep in mind that this is a loanword from French, which means the prononciation is some kind of Dutchified French. If you ask me the ng part it pronounced like French 'nzj', the rest sounds like standard Dutch pronunciation with that spelling.
what does these two dots mean? is this stress or also some pronunciation difference?
The dots are saying that the two vowels should make separate sounds, rather than the long "ie" sound.