Translation

その間 / 同時に / 一方

Meaning

During the time between two events or actions, or at the same time as another event.

Examples

• The train will arrive at 3 PM. Meanwhile, we can have a coffee.
  The train will arrive at 3 PM. Meanwhile, we can have a coffee.
• The company is developing a new product. Meanwhile, sales of its existing products have dropped.
  The company is developing a new product. Meanwhile, sales of its existing products have dropped.