Ainda não temos significados para "small troughs".
1They were made of small sheets of the yellow-tree bark, tied up at the ends with bark-string, thus forming small troughs.
2In those small troughs I keep a mixture of clay, salt, ashes, and charcoal so that the pigs can reach it easily.
3Across the floor of the building are two gutters, or channels, and through these small troughs on a pliable band circulate very quickly.
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