3. other adverbs: only, right, merely, simply 为了正好能离开地球,物体必须以每秒七英里的速度飞入太空 To get right away from the earth, an object will have to fly into space at a speed of seven miles per second.3. other adverbs: only, right, merely, simply 为了正好能离开地球，物体必须以每秒七英里的速度飞入太空。 ➢ To get right away from the earth, an object will have to fly into space at a speed of seven miles per second