Rav
abbr. 瑞星杀毒软件；右心房容积（Right Atrial Volume）
🗣️ 情景例句
Without my glasses, I'm as blind as a bat.
没有眼镜， 我就像个蝙蝠一样瞎。
Knowledge comes from experience alone.
知识来自经验。
I don't know. One, I think.
不知道，我想一岁。