“源头”造句

如果可能，应追查谣言的源头。
If it's possible, track the rumour back to its origin.

探险者在中非找到了尼罗河的几处源头.
Explorers traced the Nile River to its several headstreams in Central Africa.

我们溯河而上,直到源头.
We traced the river to its source.

• #源头