请等我片刻，我马上回来。

qǐng děng wǒ piànkè, wǒ mǎshàng huílái.

Please wait for a moment; I'll be right back.

这只花儿只能绽放片刻。

zhè zhī huār zhǐ néng zhànfàng piànkè.

This flower can only bloom for a moment.

请你在这里等我片刻，我马上回来。

Qǐng nǐ zài zhèlǐ děng wǒ piànkè, wǒ mǎshàng huílái.

Please wait for me here for a moment; I'll be right back.