slag
n
1 [U] waste matter that remains after metal has been extracted from ore by smelting 矿渣; 熔渣.
2 [C] (Brit derog sl 贬, 俚) woman who does not look respectable and is regarded as sexually immoral 贱妇; 淫妇. slag, v (-gg-) (phr v) slag sb off (Brit sl 俚) say offensive and critical things about sb, esp unfairly 侮慢或批评某人(尤指无理地)
Now he's left, she's always slagging off her old boss. 因原老板已走了, 她就一个劲儿地褒贬他.
We are thinking of placing an order for your Flying Pigeon Brand bicycles. We would be very grateful if you could make us an offer for 200 ones with details.