单词	外皮--结壳--表层
释义	壳；表层；外皮；结壳crust
随便看	balance of power balance of probabilities balance of production and marketing balance of profit balance of stock system balance of stock system，balance of stores system balance of stores record balance of stores system balance of stores system--balance of stock system balance of terror balance of time原判尚余刑期 balance of trade balance of trade account balance of trade [or payment] balance of tree balance of voltage balance on balance oneself balance on hand balance organ balance out balance output balance pan balance pan arrest balance-pan arrest