Examples
lù biāo路标shàng上xiě写de的shén me什么？-dān xiàng单向xíng shǐ行驶。
路标上写的什么？-单向行驶。
What is written on the road sign? - ONE WAY.
能向别人自顾自地单向倾诉、想说什么就说什么，这比什么都难得。
To have someone you can vent to nonstop, saying absolutely anything on your mind, this is rarer than anything else.