Leapfrogged
v. 跳背, 交替前进, 跃过( leapfrog的过去式和过去分词 )
🗣️ 情景例句
I'm Elsa Tobin. How do you do?
我叫Elsa Tobin ，你好。
Nothing is more precious than time.
世上最宝贵的莫过于光阴。
it is extremely difficult to estimate the true value of the services which people perform for us.
但要估算别人为我们为所提供的服务的价值却是极其困难的。