详细解释:手拉手, 联合
词意辨析：
hand in hand, hand to hand这是两个关于hand的固定词组。
hand in hand: 意思是“携手”、“手拉着手”、“与...联系”、“共同地”。let's work hand in hand.
让我们携手合作吧。theory should go hand in hand with practice.
理论应与实际结合。you must go hand in hand with us.
你们必须和我们步调一致。
hand to hand: 意思是“短兵相接”。on boarding enemy's vessel，the marines fought hand to hand.
登上敌船后，水兵们短兵相接。英语解释：
副词 hand in hand:
togetherclasping each other's hands例句：
Mr. Gorbachev, on the other hand, recognized that his sluggish and authoritarian bureaucracy was the worst impediment to modernization. That is why the Soviet leader came more quickly to the view that political and economic change must go hand in hand.在另一方面，戈尔巴乔夫承认，他的既迂腐又专权的官僚政府是现代化最大的阻碍。因此这位苏联领袖迅速意识到，政治与经济改革必须齐头并进。