| 1. | Historians have long been puzzled by dots , lines and symbols which have been engraved on walls , bones , and the ivory tusks of mammoths .
刻在墙壁、甲骨和长毛象的牙齿上的点、线和符号，长久以来使得史学家迷惑不解。 |
| 2. | Historians have long been puzzled by dots, lines and symbols which have been engraved on walls, bones, and the ivory tusks of mammoths .
长期以来，历史学家们对刻划在墙壁上，骨头上和古代长毛象象牙上的点，线和符号感到迷惑不解。 |
| 3. | - walruses are known for their . . . . - tusks
-而海象以其. . . -以其长牙而闻名 |
| 4. | Walruses are known for their . . . . - tusks
而海象以其. . . -以其长牙而闻名 |
| 5. | So the boar came up and rushed at him with his tusks
一头野猪冲到他身旁，狠狠地咬他。 |
| 6. | Walruses are known for their . - tusks
-而海象以其. -以其长牙而闻名 |
| 7. | Walruses are known for their . . . - tusks
海象的特点是他们的… … -长牙？ |
| 8. | Their tusks . also their male parts can get pretty gigantic
对，长牙，还有他们的阳具巨大无比 |
| 9. | I am gray , tan or light brown with yellowish - white tusks
我是灰色、茶褐色或浅棕色的，象牙黄白色。 |
| 10. | Tusks are fundamentally no different than ordinary teeth
象的长牙和普通的牙齿基本上没有什么区别。 |
