Pearlmillet
珍珠粟
??? 情景例句
I don't know why I didn't think of it.
我不知道為什么我沒有想到這一點(diǎn)。
I'm afraid I don't know. Let me ask the supervisor in this section.
恐怕我不知道，讓我來詢問一下該組的負(fù)責(zé)人。
Not at all.
沒關(guān)系。