gimmes

ＳＦのThe Martian by Andy Weirを読んでいます。
Bruce pulled another copy of the booklet from his briefcase.
"There were some gimmes right off the bat. The design presumes five hundred kilograms of Martian soil and rock samples. Obviously we won't do that. Also, there's just one passenger instead of six.
"gimmes" の意味が分からないので辞書を引きます。
・Oxford English Dictionary: A thing that is very easy to perform or obtain, especially in a game or sport.: 'the kick would hardly be a gimme in that wind’
・Cambridge English Dictionary: something that is extremely easy to do: That first test question was a gimme, for sure.