游泳圈提供的浮力让孩子能够轻松漂浮在水面上。

The ___buoyancy from the swim ring helps the child float easily on the water.

他的乐观精神在困难时期鼓舞了整个团队。

His ___buoyancy inspired the whole team during difficult times.

房地产市场的韧性帮助它在危机后迅速恢复了活力。

The ___buoyancy of the real estate market helped it recover quickly after the crisis.