both to blame

基本解释

Both blame the growing popularity of e-books, which could double to 20% of the market this year.
两者的倒闭都归功于电子书的流行，电子书的市场份额今年可能加倍到20%之多。
I wasn’t on the ballot; it was both unfair and self-defeating for voters to blame them for my personal mistakes.
我不在候选之列，所以选民要是拿我私人的过错来批评他们的话，不但不公正，而且会弄巧成拙。
The Both-to-blame Collision Clause currently published by the Baltic and International Maritime Conference is deemed to be incorporated into this Bill of Lading.
由波罗的海国际航运公会现时公布的双方有责碰撞条款应视为已被载入本提单。
cowboysamtony.blog.163.com

QUIST-ARCTON: Andrew Natsios said that both sides - the government and the rebels - are to blame for the Darfur crisis.
NPR: West African Drug Trade, War of Words in Sudan
Countries that have long-term gas partnerships with Russia -- primarily the West Europeans -- chose the "both sides are to blame" approach to the war in Georgia.
CENTERFORSECURITYPOLICY: A Bear energy market
Yet it seems more likely that a grand coalition, especially one led by a weakened Ms Merkel, would prove both short-lived and ineffective, with the two parties scampering to blame each other for unpopular measures and positioning themselves to exploit another early election.
ECONOMIST: Germany