Howdew would a dewdrop drop if a dewdrop could drop dew?是什么意思？

Howdew would a dewdrop drop if a dewdrop could drop dew?

一颗露珠会掉下露水,一颗露珠会掉下多少露水 呢 ?

would

aux. 将，将要，愿意，会，打算，大概；v. (will 的过去式，用于转述)将；

例句
I would love to go abroad this year, perhaps to the South of France.
我今年很想出国，可能是去法国南部。

dewdrop

n. 露珠，露滴；

例句
How much dew does a dewdrop drop if dew drops drop dew?
一滴露珠能滴下多少露水,如果露珠可以滴下露水?

drop

vt.& vi. （使）落下，投下，（使）降低，减少；vt. 放弃，停止，（故意）降下，垂下（眼睛）；n. 滴，空投，降落，少量；vi. （水或其他液体）滴，结束，（因受伤或死等）倒下，退出；

例句
Night temperatures can drop below 15 degrees Celsius...
夜间气温会降到15摄氏度以下。

if

conj. 如果，倘若，即使，〈口〉是否，假设；n. 条件，设想；

例句
She was old enough to absent herself from the lunch table if she chose...
她长大了，可以自己做主不来吃午餐了。

could

aux. “can”的过去式，能够，打算，用于假设语气的条件句，用于虚拟语气的结论句；

例句
The regulations were relaxed and the prisoners could get out and about a bit.
规定有所放宽，犯人可以出去短暂放风。

dew

n. 水珠，露水；vt. 弄湿；

例句
The dew gathered on the leaves.
露水在叶子上凝结。