Kalvar
卡尔瓦尔光致散射体
🗣️ 情景例句
Hey, how's it going?
嗨！ 怎么样？
When three know it, all know it.
三人知，天下晓。
In 1858, a French engineer, Aime Thome de Gamond, arrived in England with a plan for a twenty-one-mile tunnel under the English Channel.
1858年，一位名叫埃梅。托梅。德。干蒙的法国工程师带着建造一条长21英里、穿越英吉利海陕的隧道计划到了英国。