她对未来充满了顾虑。

Tā duì wèilái chōngmǎnle gùlǜ.

She is full of concerns about the future.

我们应该认真考虑，不要被顾虑所困扰。

Wǒmen yīnggāi rènzhēn kǎolǜ, bùyào bèi gùlǜ suǒ kùnrǎo.

We should consider carefully and not be troubled by concerns.

在做决定之前，他总是有很多顾虑。

Zài zuò juédìng zhīqián, tā zǒng shì yǒu hěnduō gùlǜ.

Before making a decision, he always has a lot of concerns.