Ultraviolet mutation
[机] 紫外线突变
🧩 词语组成解析
🗣️ 情景例句
with the school board,
和联合校董会一起，
Idleness rusts the mind.
懒惰使人的头脑迟钝。
Jim is writing. Lily isn't writing. She's looking at the blackboard.
吉姆在写字。莉莉没在写字。她在看黑板。