预
yù
to advance
in advance; beforehand; to prepare
你要提前预订座位。
nǐ yào tí qián yù dìng zuò wèi。
You should reserve seats in advance.
出发前他做了充分的预备工作。
chū fā qián tā zuò le chōng fèn de yù bèi gōng zuò。
Before setting off, he did thorough preparatory work.