bowlder

He hid behind a great bowlder and fell to listening.

他躲在一块大圆石后面,静静地听着.

英汉文学 - 汤姆历险

The large bowlder surface of table must be uplifted vertically in avoidance of breakage.

大面积的餐台玉石面,必须竖抬,避免餐台断裂.

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