⑫that引导定语从句，修饰先行词gas。

　　⑬set sail启航

　　⑭dinosaur/'daInəsɔː(r)/n.恐龙

　　⑮get away逃走

　　《地心游记》

　　儒勒·凡尔纳

　　[第1～3段译文]

　　在1863年，奥托·林登布罗克教授从最近买的一本古书里发现了一个秘密。那个秘密提及了通过冰岛的一座火山进入地心的一次旅行。他立刻收拾好行李去了冰岛，并且强行带上他侄子阿克赛尔与他同行。

　　在冰岛，教授雇了一位名叫汉斯的向导。当他们三人到达火山时，他们通过一个小洞在地下穿行。许多天以后，他们来到了一间巨大的、里面有一片辽阔海洋的房子。在这片海洋的岸边有一片森林，长着巨型蘑菇。头顶上，天空充满像太阳一样放射出光芒的气体。

　　他们三人造了一只小船启航了。突然，两只恐龙冒出水面开始互相打斗。那只小船在他们逃离之前差一点被恐龙弄得沉入水中。

　　They sailed to shore and explored the forest. They came across⑯ huge insects and many strange creatures. As they were wandering around, they noticed a man sitting against⑰ a tree⑱ in the distance - he was at least four metres tall. The men became afraid, and ran back to the boat.

　　They set sail again, and saw what looked like an exit⑲， but it was blocked by rocks which had fallen down from the ceiling⑳. They made a bomb to blow up\s\up1(21(21) the rocks. After the bomb exploded, their boat rushed wildly forward into a large hole. The boat floated\s\up1(22(22) down with the water. It was too fast for them to escape\s\up1(23(23). They could only hold on to\s\up1(24(24) the boat in terror\s\up1(25(25).

　　Finally, they reached the bottom of the hole. Then the water began to push them up. They floated upwards\s\up1(26(26) for miles. The water rushed beneath them, \s\up1(27(27)pushing them out into the sunlight\s\up1(28(28). They now found themselves in a volcano\s\up1(29(29) in Italy - their adventure was over, but a new one was about to begin\s\up1(30(30).,⑯come across (偶然)遇到

　　⑰against prep.靠着

　　⑱"notice＋宾语＋宾补"结构，此处用现在分词作宾补。

　　⑲exit/'eksIt/n.出口；离去vi.& vt.出去，离去

　　⑳ceiling/'siːlIŋ/n.天花板；顶棚

\s\up1(21(21)blow up使爆炸