Happened
v. 发生（happen的过去式, 过去分词）
🗣️ 情景例句
Yes. It's a great way to really see the canyon.
真的。那是真正参观峡谷的好方式。
I tried several times to call, but there is no answer.
我打了几次，但是没有人回答。
therefore the jungles and the savannahs know of no'juvenile delinquency'.
因此，丛林和荒凉地区不知道什么叫青少年犯罪"。