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确保所有的煤气取暖炉和中央供暖锅炉每年都检修一次。
Make sure that all gas fires and central heating boilers are serviced annually.
youdao
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他把椅子挪近取暖炉，点燃了煤气。
He drew up his chair near the radiator and lighted the gas.
youdao
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他把椅子挪近取暖炉，点燃了煤气。
He drew up his chair near the radiator and lighted the gas.
youdao