Sigmoidal
反曲
🗣️ 情景例句
Give Mommy a kiss, Gerald. Nice! Gerald
亲一亲妈妈！很好！
She looks so pale, she must be ill.
她脸色很苍白，一定病了。
I suddenly felt very worried, but could not say anything.
我突然非常着急起来，但却什么也说不出来。