Activity variable
[经] 效率变量, 活动变量
🧩 词语组成解析
🗣️ 情景例句
Dad, Richard--Alexandra's here.
爸爸 Richard Alexandra来了。
Relax. You can count on me.
放一百二十个心吧。
The children are no longer young, and they know who Father Christmas really is.
孩子们不小了，他们知道真正的“圣诞老人”是谁。