他要么一直和她说话，要么就完全不理她。

He talks to her all the time, ___or ___else he completely ignores her.

效果没有预期的那么强烈，或者他只是没有表现出来。

The effect is not as strong as expected, ___or ___else he simply does not show it.

她一定是全神贯注于工作，要不就是在沉思别的事情。

She must be deeply concentrated on her work ___or ___else she's lost in thought about something else.