And why only snakes? Cats, for instance, would be greatly helped; no running fights with large, fierce rats or tussles with grown rabbits -- just a bite and no more effort needed.
为什么只有蛇才有毒液呢？譬如说，如果猫有毒液，那对猫会大有帮助，它就不必再和又大又凶的老鼠边跑边博斗了，也不必再和大兔子扭斗了，只要咬一口，就不必再费大力气。
新概念英语第四册
Lesson 20 Snake poison
📚 句中词汇解析
从本句中提取的重要词汇
n. 例子，实例;情况;要求，建议;[法]诉讼手续;
vt. 举…为例;
💡 in(upon)+stan(stand)+ce(名词后缀)→建议；实例；诉讼程序；例证
"It is not a unique instance , but has its counterpart."
无独有偶.
近义：exemplify, occurrence, example, occasion, opportunity, case
n. 努力，尝试;工作;成就;杰作;
💡 ef出+fort强大，力量→出力→努力
"She made a feeble effort to get to school on time."
她努力想按时赶到学校,但未成功.
近义：intent, pledge, pull, push, spirit, struggle
反义：heartsickness, hopelessness, intimidation, lassitude, tiredness, weariness
adv. 大大地，非常;
"The prospect of a year in India greatly excited her."
有望在印度待上一年使她激动万分。
近义：highly, hugely, immensely, largely, mighty, astronomically
n. 跑步;运转;流出;
adj. 跑着的;流动的;连续的;操作中的，运转着的;
v. 跑;运转(run的ing形式);
"He kept up a running commentary on everyone who came in or went out."
他不断地对上下场的每一名队员进行解说。
近义：march, operation, race, run, working, footrace
反义：lagging, leisurely, phlegmatic, poky, slowish, sluggardly
adv. 大大地;夸大地;详细地;顺风地;
adj. 大的;大规模的;大型号的;广泛的;
v. 玩个痛快;（尤指跳舞和饮酒）作乐;
"The two large classrooms have been assigned to us."
这两间大教室分配给了我们。
近义：major, sizeable, big, sizable, some, capital
反义：small