Backfires
v. （內燃機等）發生逆火( backfire的第三人稱單數 ); 發生回火; （槍炮）向后爆發; 發生意外
??? 情景例句
I've been thinking about it for weeks now.
為這事我想了幾個星期。
The gorilla is beating his chest.
那只大猩猩在捶著胸膛。
and it is only in the seas and rivers, and sometimes lakes, where mud and sit have been continuously deposited,
所以只有在泥沙不停淤積的海洋和江河里，有時在湖泊里，