It. s the lateral shoot from the main stem of a plant.

这是分枝植株的主茎上长出的侧枝。

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A tree is a tall, woody plant that usually has one main stem, or trunk.

树是一种高大的木本植物，通常有一根主干，或树干。

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The stem is like the crowded main road.

主干就像是一条拥挤的主要公路。

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The stem is like the crowded main road.

主干就像是一条拥挤的主要公路。

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