See how reliable product reviews are on %1$s before you buy. Review checker, an experimental feature from %2$s, is built right into the browser. It works on %3$s and %4$s, too.
决定购买前，先看看 %1$s 上的商品评价是否可信。核查评价是 %2$s 的一项实验功能，内置于浏览器中。%3$s、%4$s 上也能用。