tā / bǎ / bǎo guì / de / jiàn yì / jiāo gěi / le / lǎo bǎn / què / rú / míng zhū àn tóu / méi rén / zhòng shì

他把宝贵的建议交给了老板，却如明珠暗投，没人重视。

He gave the precious advice to his boss, but it was like casting pearls before swine; no one valued it.