✅ 同义词
🗣️ 情景例句
Why not?
为什么不能？
Mrs. Hughs, this is Peter Brown.
休斯太太，这是彼得i布郎。
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。