yóu yú / zhǔn bèi / bù zú / wǒ men / zuò shī / le / jìn jūn / hǎi wài / shì chǎng / de / liáng jī

由于准备不足，我们坐失了进军海外市场的良机。

Due to inadequate preparation, we missed the golden opportunity to enter the overseas market.