这两只都是中等大小的昆虫，翼幅大约为四厘米。

Both are moderately large insects, with a wingspan of around four centimetres.

《柯林斯英汉双解大词典》

将3杯水加入一个中等大小的炖锅内，煮至沸腾。

Bring the 3 cups water to a boil in a medium saucepan.

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将油、醋和芥末放在一个中等大小的碗里一起搅拌，直到混合均匀。

Whisk together the oil, vinegar and mustard in a medium bowl until well combined.

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