Definition (技能)
Describes someone's level of sexual skill, either positively or negatively.
性技佳（或不佳）
Despite his other shortcomings, she admitted he was great in the sack.
儘管他有其他缺點，但她承認他在床上很棒。
They broke up because she found him terrible in the sack, even though he was otherwise a good partner.
他們分手了，因為她發現他在床上很差勁，儘管他其他方面是個好伴侶。
She said that while he wasn't the best she'd ever dated, he was certainly good in the sack.
她說雖然他不是她約會過最好的，但他在床上確實不錯。