惜别的英文：
be reluctant to part

参考例句：

The candle has a wick just as we have a heart, all night long it sheds tears for us before we part.
蜡烛有心还惜别，替人垂泪到天明。

"With a parting look round his room, he went out."
他用惜别的眼光看了看这间房子,然后就走出去了。

reluctant是什么意思：
adj. 不情愿的，勉强的

Most of the soldiers are reluctant conscripts.
大部分士兵都是不情愿的被征服役者。

They have often been reluctant to devalue.
他们往往不顾货币贬值。

She showed the utmost reluctance.
她显得极其勉强。

The spring of the plains is not a reluctant virgin.
大草原的春天，并不是象一个处女那么娴静文雅。

He gave me a reluctant assistance.
他很不情愿地给了我帮助。

part是什么意思：
n. 部分；零件；角色
v. （使）分裂；分岔；（使）分开
adv. 部分地
adj. 部分的

sustain the part of
恰当地扮演

An aliquot part.
整除数，约数能整除的部分。

The parts interlock.
各部分相互扣住。

They are part of evolution and evolution is a part of nature.
它们是发展的一部分，而发展又是自然的一部分。

It is made part of iron and part of wood.
它部分由铁部分由木而制成。