Delta seal
[化] 三角密封
🧩 词语组成解析
delta
['deltə]
n. 希腊语字母表第四字母δ;（河流的）三角洲;[数]变量增量;
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
Between the woods and frozen lake
就在林子和冰湖之间
He lacks the necessary experience.
他缺乏必要的经验。
I don't think so. Ah! It was Li Lei.
我想不是。啊，是李雷！