🧩 词语组成解析
n. 三种氢的同位素中质量最轻者
🗣️ 情景例句
Here you are.
给你。
Kept waving to her mother until the train was out of sight.
不断地冲她的母亲挥手，直到火车驶出了视线。
He said that there was now no village.
他说那村子已经没有了。