HSK 5
Zhè shì yī tiáo dānxiàng xíngshǐ de jiēdào.
This is a one-way street.
HSK 5
Dānxiàng jìng cóng wàimiàn kàn xiàng pǔtōng bōlí.
A one-way mirror looks like ordinary glass from the outside.
HSK 6
Tāmen zhījiān de gōutōng shì dānxiàng de, tā cóngbù huíyìng.
The communication between them is one-sided - she never responds.
