除非撤销对她的谋杀指控，否则她拒绝作证。用英语怎么说？

除非撤销对她的谋杀指控，否则她拒绝作证。

She refused to testify, unless the murder charge against her was dropped.

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

refused

v. 拒绝，回绝( refuse的过去式和过去分词 )，推却，回绝，拒绝给（所需之物）；

例句
The army refused to accept orders from the political leadership...
军队拒绝接受政界领导层下达的命令。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

testify

vi. 作证，声明，证明，证实；vt. 作证，证明，为…提供证明，公开宣称，宣布；

例句
I can testify to the credentials of the clientele.
我可以证明委托人的资质。

unless

conj. 除非，如果不；prep. 除了，…除外；

例句
No-one can set up a waste disposal company unless they can show that they've got enough money and trained staff to do the job properly...
任何人若想成立废品处理公司,必须证明其拥有足够资金和受训员工以保证工作可以顺利开展。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

murder

n. 谋杀，杀戮，极艰难[令人沮丧]的经历；vt. 凶杀，糟蹋，打垮；vi. 杀人；

例句
He was intent on murder and he came within an ace of succeeding.
他一心想杀人并且差点就得逞了。

charge

vt. 装载，控诉，使充电，索（价）；vi. 索价，向前冲，记在账上，充电；n. 费用，指示，掌管，指责；

例句
Being in charge of the National Health Service reforms did not endear him to one and all.
负责国民医疗服务制度改革并未使得所有人都喜欢他。

against

prep. 反对，对…不利，紧靠，以防；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

dropped

v. 落下（ drop的过去式和过去分词 ），降低，减少；

例句
He dropped his sausage on the pavement and someone's dog ate it, mustard and all.
他把香肠丢在人行道上，不知是谁家的狗将香肠甚至连带芥末都吃个了精光。