Orange border-left: this sentence has been corrected by a reader; Red border-left: some readers think that this sentence doesn't make any sense; Blue border-left: some readers think that this sentence doesn't have grammar mistakes; Green border-left: this sentence has been verified by the translator.

If a sentence has been corrected by a reader or verified by the translator, others can't correct it again except for the translator.

If you don't see any Chinese original, it means that the translator didn't upload the Chinese original for your reference.