Normal fountain device can only make counter-swing or lateral swing on a round pipe.It is hardly to make centripetal inward or outward swing.是什么意思_Normal fountain device can only make counter-swing or lateral swing on a round pipe.It is hardly to make centripetal inward or outward swing.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句