White pins are often covered with tin, and black ones with black paint.

白色的大头针一般镀锡的，黑色的大头针则涂上了黑漆。

ICC does buy US made steel but says imports bridge a gap in supply for high-grade tinplated steel needed for blemish-free lithographic printing.

独立金属罐头公司确实购买了美国产生的铁，但同时也表示，进口可以弥补高档镀锡的供应缺口，而高档镀锡版印刷所需要的原材料。

Untinned copper can be dangerous and acidic foods cooked in it can turn green and make you ill or even die.

未镀锡的铜具很危险，用它煮的酸性食物会变绿，让你生病甚至死亡。

Just as they are now, the cans were tin-plated steel containers, and the process had the advantage of being cost-effective.

和现在一样，当时的罐头也镀锡制容器，这种工艺的优点经济实惠。

The United Nations Conference on Trade and Development forecasts global trade will slip a further 26.9 percent in the second quarter.

联合国镀锡和发展会议预测，第二季度全球贸易将进一步下滑26.9%。

An important part of the girls cleaning the copper is to make sure that the inside is still tinned.

让女仆们清洁这些铜具的一个重要原因确保铜具内部的镀锡不掉。

But not all of the copper is tinned, this one here is untinned because it's a sugar pan.

但并不所有的铜具都镀锡的，这里的这一个没有镀锡，因为它一个糖锅。