Diasterane
重排甾烷
🗣️ 情景例句
Hi, Susan.
嗨， Susan。
What shall I send him for his Christmas?
我要送他什么东西作为圣诞礼物？
'The strap needs mending,' said Mrs.Sterling later, 'but they did not steal anything.'
“这提包带需要修理，”斯特林夫人事后说道，“不过他们什么也没偷走。”