A dark cloud loomed up over the horizon.一片乌云突然出现在天际.A patch of red cloudburst over the horizon , blood - red, and glowing.天边绽出一小片红霞,血红、发亮.I could perceive the ship coming over the horizon.我感到船将出现在视野中....

over the horizon的音标：...

即将来临，已露端倪（同on the horizon）...