This seemed to sort of lighten the boat, and it went on much easier (это, казалось, отчасти облегчило лодку, и она продолжила /плыть/ намного легче), the small boy shouting at the top of his voice, and urging his steed into a gallop (маленький мальчик /при этом/ крикнул во весь голос и пустил коня галопом; to urge — подгонять, подстегивать, побуждать). The fellows sat up and stared at one another (приятели приподнялись и уставились друг на друга). It was some seconds before they realised what had happened to them (прошло несколько секунд, прежде чем они осознали, что с ними произошло), but, when they did, they began to shout lustily for the boy to stop (осознав, они начали яростно кричать мальчишке, чтобы он остановился; lustily — энергично, сильно). He, however, was too much occupied with the horse to hear them (он, однако, был слишком занят своей лошадью, чтобы услышать их), and we watched them, flying after him, until the distance hid them from view (и мы смотрели, как они мчатся за ним, пока расстояние не скрыло их из /нашего/ поля зрения; to hide).

precise [pr'sas] disembarked [,dsm'b:kt] occupied ['kjupad]

"I should like to see him pull the wrong line," murmured George, as they passed. And at that precise moment the man did it, and the boat rushed up the bank with a noise like the ripping up of forty thousand linen sheets. Two men, a hamper, and three oars immediately left the boat on the larboard side, and reclined on the bank, and one and a half moments afterwards, two other men disembarked from the starboard, and sat down among boat-hooks and sails and carpet-bags and bottles. The last man went on twenty yards further, and then got out on his head.

This seemed to sort of lighten the boat, and it went on much easier, the small boy shouting at the top of his voice, and urging his steed into a gallop. The fellows sat up and stared at one another. It was some seconds before they realised what had happened to them, but, when they did, they began to shout lustily for the boy to stop. He, however, was too much occupied with the horse to hear them, and we watched them, flying after him, until the distance hid them from view.