如果有空，不妨来参加我们的聚会。

Rúguǒ yǒu kòng, bùfáng lái cānjiā wǒmen de jùhuì.

If you have time, feel free to join our gathering.

你有什么建议，不妨说出来。

Nǐ yǒu shénme jiànyì, bùfáng shuō chūlái.

If you have any suggestions, feel free to speak up.

要是有其他问题，不妨随时联系我。

Yàoshi yǒu qítā wèntí, bùfáng suíshí liánxì wǒ.

If you have any other questions, feel free to contact me anytime.