邀请信的语言应简洁明了，而且真诚。

Letters of invitation should be brief, clear, and sincere.

youdao

如果你抬头微笑，而且真诚感恩，你是幸福的，因为多数人可以如此，却没有这么做。

If you hold up your head with a smile on your face and are truly thankful, you are blessed, because the majority can, but most do not.

youdao

他所爱的音乐和诗歌如他的名字，像山石又像泉水，不但粗犷、本色，而且真诚和纯朴。

His lovely music and poetry were as his name - mountain rock and spring water - not only rough and natural, but also sincere and simple.

youdao