n. 一点,一块;少量,少许;一会儿,一转眼;[计] 比特(二进位制信息单位);
adj. 很小的,微不足道的;
adv. [口语]相当,有点儿,或多或少,多少[a bit to的省略];
vt. 给(马)上嚼子;上衔铁;抑制;制约;
v. 咬,叮( bite的过去式);刺痛;咬饵;有咬(或叮)的习性;
Snakes did not acquire their poison for use against man but for use against prey such as rats and mice, and the effects on these of viperine poison is almost immediate.