例句與造句

1. However, the service then had to be temporarily abandoned while the roads on which they operated were strengthened, as the trolleybuses had been pressing down the surface stones with which the roads were paved.
2. Two-foot high marble surface stones, using an equal number of stretchers and headers, were backed by granite blocks from the 152-foot level ( the first course above the rubble ) to the 218-foot level, where marble headers become increasingly visible on the internal surface of the walls up to the 450-foot level, above which only marble stones are used . { { refn | group = n | name = level|
3. It's difficult to find surface stone in a sentence. 用surface stone造句挺難的
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