As the wheel rotates, the gondolas are kept in the upright position by a simple gearing system.

当车轮转动时，贡多拉通过一个简单的传动系统保持在垂直位置。

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He moved into an upright position.

他换成了一个挺直的姿势。

《柯林斯英汉双解大词典》

Store your toothbrush in an upright position, if possible, and allow it to air dry until using it again.

如果可以，请将牙刷头朝上竖立摆放，并自然风干，以备下次使用。

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It became jammed in the upright position for two days after being hit four times on Saturday.

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When laying it flat on a lap it's fine, but we could never find a good way to hold it in a more upright position.

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Or position the bolster in front of regular pillows as extra lumbar support if you want to assume a more upright position to devour Gillian Flynn's "Gone Girl" or use your laptop.

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