他搔了搔手臂上被虫叮咬过的地方。

He scratched his arm where he had been bitten by an insect.

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如果被蝰蛇咬了一口，人们经常会误以为只是蚊虫叮咬，直到接踵而来的剧痛，受害者才会明白过来。

Often an adder bite goes unnoticed or is confused with an insect sting until the ensuing pain gets the victim’s attention.

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蜱虫若虫叮咬造成的局部感染率可能比较低（低于20%），但是由被检测到附着在皮肤上的蜱虫叮咬造成的感染风险则更低（小于5%），因为大多数患上莱姆病的人并没有注意到蜱虫。

Local infection rates in nymphal ticks may be low (< 20%) with a low risk of infection (<5%) from a detected, attached tick (most people who get Lyme disease do not notice the tick).

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