Ukrainian forces have withdrawn from parts of a long-fought eastern city, highlighting the challenge facing Kyiv’s troops as Russia intensifies its offensive and US military aid is slow to arrive.
乌克兰军队已从激战已久的一个东部城市的部分地区撤退，突显乌军面临的挑战，其背景是俄罗斯加强攻势，而美国的军援姗姗来迟。
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