基本解釋[經(jīng)濟學]變相貿(mào)易壁壘英漢例句雙語例句In fact, the barrier is a covert form of trade protection.綠色壁壘的實質(zhì)是變相的貿(mào)易保護。covert trade barrier更多例句專業(yè)釋義經(jīng)濟學變相貿(mào)易壁壘