海运单据 或者标准 shipment documents 或者 20' sd（标准20尺） buying tirp, 选品，或选品会 picking , 分析或分拣 countfit sample 同样的样品，同等的样品 很多词可能. Are there any other meanings of sell and buy? It doesn't seem to fit the situation. I'm not buying it isn't 'sell' and 'buy' used when trading things? What do you buy is simple present and what are you buying is present continues tense.
海运单据 或者标准 Shipment Documents 或者 20' Sd（标准20尺） Buying Tirp, 选品，或选品会 Picking , 分析或分拣 Countfit Sample 同样的样品，同等的样品 很多词可能.
Are there any other meanings of sell and buy? It doesn't seem to fit the situation. What do you buy is simple present and what are you buying is present continues tense.
I'm Not Buying It Isn't 'Sell' And 'Buy' Used When Trading Things?
What Do You Buy Is Simple Present And What Are You Buying Is Present Continues Tense.
海运单据 或者标准 shipment documents 或者 20' sd（标准20尺） buying tirp, 选品，或选品会 picking , 分析或分拣 countfit sample 同样的样品，同等的样品 很多词可能. Are there any other meanings of sell and buy? It doesn't seem to fit the situation.
