Indefinite matrix
[计] 不定矩阵
🧩 词语组成解析
🗣️ 情景例句
Where is the best spot in town to hang out at?
城里出去玩儿最好的地方在哪儿？
The children were thrilled with joy at the sight of the parade.
孩子们看到游行队伍时异常兴奋。
Annie was born in a poor family, on April 4th, 1866.
1866年4月4日，安妮出生在一个贫苦家庭中。