2. The workers were coaling the ship when he came back. 当他回来的时候，工人们正在给船加煤。
3. Introduces the reason, experience class and prevention measure of a boiler coaling machine. 一起锅炉上煤机事故的发生原因、经验教训和预防措施。
4. It was founded in1859 by the builders of the canal and was once an important coaling station. 该市于1859年由苏伊士运河开凿者们建起来，它曾是一个重要的装卸煤炭的港口。
5. The key factor of generator safe operation is affected by the corrosion of water internal coaling generator's hollow copper conductor. 水内冷发电机空芯铜导线的腐蚀问题是影响发电机安全运行的重要因素。
