where
u
pon
1
于是, 因此
immediately after this; because of something mentioned
- She received the letter, whereupon she immediately called her lawyer.
她收到了信，随后立即打电话给她的律师。
- They reached an agreement, whereupon they signed the contract.
他们达成了协议，随后签署了合同。
- The rain stopped, whereupon the sun emerged from behind the clouds.
雨停了，随后太阳从云层后面出来了。
2
于是, 随后
used to indicate the location or place where something occurred
- He arrived at the castle, whereupon he beheld the magnificent courtyard.
他到达了城堡，在那里他看到了宏伟的庭院。
- They reached the summit, whereupon they enjoyed panoramic views of the valley below.
他们到达了顶峰，在那里他们欣赏到了下面山谷的全景。