Exoelectrons
外激电子
🗣️ 情景例句
Is that you, Susan?
是你吗， Susan？
Mary, this is Joe's brother David.
玛丽，这是乔的兄弟戴维。
She intended to dress up as a ghost and as she had made her costume the night before,
她打算装扮成鬼的模样。头天晚上她已把化装服做好，