2 sentences

1. 海平面正在上升。

   hǎi​píng​miàn zhèng​zài shàng​shēng.

   Sea levels are rising.

   Source: OpenSubtitles

2. 高山上的气压通常比海平面低得多。

   gāo​shān shàng de qì​yā tōng​cháng bǐ hǎi​píng​miàn dī de duō.

   Atmospheric pressure on high mountains is usually much lower than at sea level.

   Source: Dong Chinese Dictionary