yǐ / qián / chū / guó / lǚ / xíng / shí / hěn / duō / rén / dōu / huì / tí / qián / gòu / mǎi / lǚ / xíng / zhī / piào

以前出国旅行时，很多人都会提前购买旅行支票。

In the past, many people bought traveler's checks before traveling abroad.