n.叮人小虫;
例句:
A mosquito, a gnat.
一只蚊子, 一只讨厌的昆虫.
He'll hardly reach his aim, because he strains at gnat.
他很难达到目的, 因为他这人太拘泥细节了.
You blind guides ! You strain out a gnat but swallow a camel.
你们这瞎眼领路的、蠓虫你们就滤出来、骆驼你们倒吞下去.