Injectivity
内射性
🗣️ 情景例句
He's so little ... so new.
他这么小……这么幼……
To walk away
走开
When he got married, Alf was too embarrassed to say anything to his wife about his job.
艾尔弗结婚时，感到非常难为情，而没有将自己的职业告诉妻子。