Tommy started to giggle, which made bubbles under the water.

汤米开始咯咯笑，这让水下起了泡泡。

One such conversation that's bubbled under the surface over recent years, but that's really come to the forefront in 2020, is that of financial independence.

近年来浮出水面的此类对话之一，但在 2020 年真正走到了最前沿， 就是财务独立性。

Symphony of the Seas uses 25% less fuel than other Oasis-class ships thanks to design changes, including a new system that releases tiny air bubbles under the hull.

由于设计上的改变， 海洋交响号比其他绿洲级船舶减少了 25% 的燃料，其中包括在船体下方释放微小气泡的新系统。