求翻译：例如，有一次我和妹妹在公车上坐着。我和妹妹看见一个白发苍苍的老人没位置坐了。我妹妹见到马上让座给这位爷爷.可见，我妹妹的素质很高的是什么意思？

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For example, on one occasion I and my sister was sitting on the bus. My sister and I saw a white haired old man sitting in the no position. My younger sister to see immediately give up her seat to this place, it can be seen that my sister's grandfather . The quality is very high

For example, once I and the younger sister sit on the public vehicle.I and the younger sister saw a white hair gray old person not to have the position to sit.My younger sister saw offers one's seat to somebody immediately for this grandfather. Obviously, my younger sister's quality very high

For example, once I and my sister sat on the bus. My sister and I saw a white-haired old man sat no location. My sister saw seats at once to the grandfather., my sister's quality is very high

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