Mitralization
二尖瓣型心
🗣️ 情景例句
since ten this morning,
从今天上午十点起，
Please don't be frightened by my dog.
请不要害怕我的狗。
she presented a more majestic spectacle than Stockholmers had ever seen before.
瓦萨号展现的壮观景象是斯德哥尔摩人从未见过的。