这件事需慎重考虑，不能着急。

Zhè jiàn shì xū shènzhòng kǎolǜ, bù néng zháojí.

This matter requires careful consideration and cannot be rushed.

完成这个任务所需的时间比我想的要长。

Wánchéng zhège rènwù suǒ xū de shíjiān bǐ wǒ xiǎng de yào cháng.

The time needed to complete this task is longer than I expected.

按需分配是一个重要的经济概念。

Àn xū fēnpèi shì yī gè zhòngyào de jīngjì gàiniàn.

Distribution according to need is an important economic concept.