If we consider a common understanding, 'shaft' can refer to different things like a long, narrow part or a passage. In some novels, if there is a description of a shaft as black, it might be for creating a certain atmosphere, perhaps a sense of mystery or gloom. However, again, without knowing the particular novel, it's just speculation.
Open ditches and underground ditches were two types of drainage ditches. Open ditches referred to visible drainage ditches, often used in places such as roadsides and stadiums. Water could flow directly into the ditches from various locations. The cover was usually a comb or grill, which could pass water and intercept debris. A hidden ditch was a ditch that guided water below the ground. It was usually used to lay water pipes, electric wires, and other pipes. The cross-section was larger than an open ditch. The cover was usually steel plate or concrete. Water could not flow directly into it, and the cover could not block it. Open ditches were suitable for excavation and helped to discharge surface water, which was beneficial to the regulation of underground water level and soil moisture. The underground ditch could drain water quickly, occupy a small area and have a small amount of earthworks, which was helpful for field machinery operations.
Shaft visual novel could be a term for a visual novel that has some connection to Shaft. Shaft has created many visually striking anime series. In the context of a visual novel, it might imply a certain aesthetic quality similar to what Shaft brings to its anime works, like detailed character designs and elaborate backgrounds.
The story of Flex Watches may have begun with an entrepreneur who had a passion for timepieces. They saw a gap in the market for watches that were both affordable and stylish. So, they set out to create Flex Watches. Along the way, they had to deal with challenges such as sourcing materials, manufacturing, and marketing. But through determination and a focus on quality and design, they were able to build a brand that has gained recognition. They may also have a story of giving back, perhaps through partnerships with charities or community initiatives.
Erika in Flex Fighters is a character within the Flex Fighters universe. However, without more specific information about this particular 'Flex Fighters' (as there could be different versions or interpretations), it's hard to give a detailed account of who she specifically is. She could be a fighter, a sidekick, or have some other role within the story.
There were a few ad-free cleaning software that were considered the strongest. These included Dish ++ and Ccleaner. Dism++ was a tool developed by Chuyu's team. It was written based on the Microsoft-based internal APIs. It had a new architecture and a smooth progress display. It supported expired driver cleaning, update cleaning, system backup, and restore functions. CCleaner was a well-known third-party cleaning software. It had a complete set of functions that could clean up all kinds of junk files in the Windows system, as well as the optimization and management of the system. These two software were considered very useful cleaning tools by the majority of users, and there were no advertisements.