selfish

/ˈsɛlfɪʃ/

concerned chiefly or only with yourself and your advantage to the exclusion of others; - Maria Weston Chapman

中文释义：自私的；利己的

It is selfish to keep all the credit for yourself.

把所有的功劳都归于自己是自私的。

Selfish behavior can damage relationships and trust.

自私的行为会损害关系和信任。