Scotland suffered a 37-10 loss to Canada in the opening match of the Women's Rugby World Cup in Guildford.
Canada raced into a 25-0 half-time lead thanks to tries from Barbara Mervin, Mandy Marchak and Maria Gallo.
Marchak added another touchdown after the break before Lucy Millard replied with a try for the Scots.
Heather Moyse claimed the Canadians' fifth score, with Lindsay Wheeler replying. Nicola Halfpenny missed both Scottish conversion attempts.
Scotland head coach Gary Parker told the Scottish Rugby website: "It was really a game of two halves.
"We didn't turn up for the first 40 minutes of the match and we were punished for that. Every time we let them in, they got the better of us.
"We need to learn from our mistakes - quickly - put this game behind us and focus on the next game, on Tuesday. It'll be a huge match against the French and we need to be ready."
In the other match in Pool C on Friday, Sweden's first World Cup match since 1998 almost ended in an upset of France, the Women's Six Nations runners-up.
Loose forwards Claire Canal and Sandra Rabier scored first-half tries for France, but Sweden reached the break only 10-9 down thanks to captain and fly-half Ulrika Andersson-Hall, who missed her first penalty attempt but nailed the next three.
France changed their goal-kicker in the second half but still couldn't land one to cushion the gap, and needed a second Canal try with 12 minutes to go to secure victory.
Scotland face France in their second match on Tuesday (1400 KO).