I do not know whether you realize it, but this condition is essential to us.
我不知道你是否了解,但是,這個條件對我們是必要的。
Marine Studio biologists have pointed out that, however intelligent they may be, it is probably a mistake to credit dolphins with any motive of lifesaving.
海洋攝影室的生物學家指出,無論海豚多么聰明,認為它們有救人的動機可能是錯誤的。