You can either have software quality or you can have pointer arithmetic, but you cannot have both at the same time. (Bertrand Meyer).

你可以拥有高质量的软件，也可以拥有指针运算，但两者不可兼得。

youdao

As a result, it is difficult or impossible to have both queue managers online at the same time, which affects scheduling and execution of the migration tasks.

结果，要让两个队列管理器同时在线将非常困难或根本不可能，从而影响迁移任务的计划和执行。

youdao

The point is that there have been precious few moments over the past century during which both sides have embraced the idea of two states at the same time.

关键是在过去的一个世纪里曾有过几个弥足珍贵的时刻，双方同时愿意接受分治的解决方案。

youdao

Only once did they have us both at the same time.

FORBES: The Early Years

But WPT and Toronto-based Smart TV game app makers TransGaming announced a partnership today that might have you doing both at the same time.

FORBES: Living Room Poker 2.0: WPT Is Betting On Smart TV

The point is that there have been precious few moments over the past century during which both sides have embraced the idea of two states at the same time.

ECONOMIST: The Arabs and Israel