这个孩子很聪明，总是很快就能解决难题。

The ___smart child always solves difficult problems quickly.

她穿了一件时髦的连衣裙去参加派对。

She wore a ___smart dress to the party.

他迈着轻快的步伐走向公交站。

He walked with a ___smart pace toward the bus stop.

她总能想出聪明的主意来解决难题。

She always comes up with ___smart ideas to solve tough problems.

这款智能手表可以监测心率和血氧水平。

This ___smart watch can monitor heart rate and blood oxygen levels.