复信

例句：

1. 1. Please do not hesitate to contact me if you need any further assistance.
   如果您需要任何进一步的帮助，请不要犹豫与我联系。
2. 2. I've received your letter and will reply as soon as possible.
   我已经收到你的信了，我会尽快回复。
3. 3. The company promised to send a representative to meet with us, but we have yet to receive a formal reply.
   公司承诺派代表来见我们，但我们还没有收到正式的回复。