Sier
n. 青岛姒儿（中国青岛贸易有限公司名）
🗣️ 情景例句
one of the best tennis players on the Michigan team--
当年Michigan球队最好的网球选手--
In secondary school, children get more advanced knowledge.
在中学，孩子们得到更高深的知识。
many of them serious and senior scientists---- who dream of sending people to it.
其中的不少人是认真和资深的科学家，他们一直梦想着把人送上火星。