Operant
n. 发生作用之人或物, 工作之人或物\\na. 动作的
🗣️ 情景例句
You shouldn't have.
不该这样破费的。
She spends much of her leisure times watching TV.
她花很多空闲时间看电视。
She came into my room yesterday.
昨天她到我房里来了。