Silicea
硅剂
🗣️ 情景例句
I'll go upstairs and stay with him until he falls asleep again.
我上楼去陪他， 直到他又睡着。
I hope you'll be well soon.
我希望你不久将好。
I wonder.In England, each person speaks a different language.
我感到奇怪。在英国，人们各自说着一种不同的语言。