proper law的用法和样例：
例句
- This Article applies if an account agreement is amended so as to change the applicable law under this Convention.
如果帐户协议的修改，使依本公约确定的准据法发生变更，本条将予以适用。 - The conflict rules are generally mandatory in Roman law countries where the courts have the duty to apply to the leges according to the conflict rules of the leges fori.
这些国家的法院总是适用法院地法，除非当事人一方要求适用外国法作为准据法。
