Any of various dark-colored, chiefly nonvenomous snakes, such as the black racer or the black rat snake of North America.

黑蛇一种黑色，多为无毒蛇类，如北美黑游蛇属黑蛇和食鼠黑蛇。

The small Indian mongoose, reaching no more than a foot or two inheight, was originally brought to Puerto Rico and the Hawaiian islandsto protect sugar cane fields from rat and snake damage.

小印度猫鼬不到一二英尺高，原先引入波多黎各和夏威夷群岛，是为了保护甘蔗田免受老鼠和蛇的伤害，结果，猫鼬没有起到控制物种拥挤的作用，其危害却迅速地远远超过预期的野生动物危害。

The other five heads — the dragon, snake, goat, rooster and dog — remain unaccounted for and were possibly destroyed. That makes the rabbit and the rat the last remaining pieces of the set.

其他5个头像是龙，蛇，羊和狗，还仍然不知下落，有可能已经毁坏，使得兔和鼠成为全套最后剩下的部分。

It took 132 hours for the snake to fully digest the rat, scientists said, when they presented the study at the Society for Experimental Biology's annual meeting in Prague, Czech Republic.

科学家介绍说，这条蛇足足花了132小时才彻底消化了被捕食到的老鼠。研究人员在捷克共和国首都布拉格举行的实验生物学学会的年度会议上展示了自己的成果。