i've seen this caused by slight loss of pressure in cylinder (s)... its sometimes an early warning of more severe problems that are developing e.g. if there is some light damage to a piston ring or the head gasket that is going to degrade further if left unremedied. (mechanics.stackexchange.com)
EUR / USD has posted slight losses in the Thursday session, erasing the gains seen on Tuesday. (betiforex.com)
EUR / USD has posted slight losses in the Wednesday session, erasing the gains seen on Tuesday. (betiforex.com)