当我们下定决心面对世界上所有事物，包括荆棘难题，就已经打赢了半场战役。We win half the battle when we make up our minds to take the world as we find it, including the thorns. 经理在半场时把几名队员换下了场.At half - time the manager swapped some of the players around.半场时...
The tools will corrode with rust if never used.这些工具如长期不用会长铁锈而损坏.An iron tool, if never used, will corrode with rust.铁制工具长期不用会锈损.Acid causes metal to corrode.酸使金属腐蚀....