Rockets can do it. As long as a rocket burns enough fuel to provide sufficient thrust, it will continue to increase in speed. [原译]火箭能达到这个速度。一旦火箭有足够的燃料使它产生足够的推力,速度将不断增加。(科普)
在英语里连词 as long as (so long as) 引导的是一个条件状语从句, 相当于 provided (that), 通常可译为“只要”。例如:
- The electrical resistance of a body is constant only so long as its physical condition is unchanged. 只要物体的物理条件不变,其电阻就是恒定的。
- As long as light travels through one kind of substance, it proceeds in all directions in straight lines from its source. 只要光是在同一物质中传播,它就从光源笔直地向各个方面照射。
- Bill agreed to take with me—as long as I didn't tell anybody else. (Hillary, Living History) 比尔答应和我一起去—只要我不告诉任何人。 在汉语里,“一旦”用作连词时,一是表示“忽然有一天”,例如,“相处三年,一旦离别,怎么能不想念呢?”;二是用于未然,表示“要是有一天”,例如,“理论一旦为群众所掌握,就会产生巨大的物质力量”。因此,在上例中用汉语的“一旦”来翻译英语的 as long as 是不够恰当的。 [试译]……只要火箭有充分的燃料燃烧,来提供足够的推力,它就会不断地增加速度。