If leakproof, must lay down the ground carefully in the construction, do not destroy the waterproof layer and modify on the sewer and the heating system arbitrarily.是什么意思_If leakproof, must lay down the ground carefully in the construction, do not destroy the waterproof layer and modify on the sewer and the heating system arbitrarily.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句