这句子来自美国小学读本
Marion was playing in the Garden ond day
Marion was playing in the garden one day.
She heard a loud humming.
It was too loud for a bee.
It was a little humming-bird.
一天,玛丽恩正在花园里玩耍.
忽然,她听到一阵很响的嗡嗡声.
那个声音太大了,根本不可能是一只蜜蜂.
原来是一只小蜂鸟.
too loud for a bee.
可以理解为
too loud to be from a bee
（声音太大以至于不可能来自一只蜜蜂）
我意译为
那个声音太大了,根本不可能是一只蜜蜂.