They have acceded to the treaty.

他们已经加入了那个条约。

youdao

Many countries have acceded to the treaty.

许多国家已加入了那个条约。

youdao

That is no worse than unfortunate: the deadline applies only to states that acceded to the treaty more than ten years ago and America still has time to make its claims.

最糟糕的是：截止期限仅限于10多年前加入公约的国家，但美国仍有时间制定主张，不过得先签署公约。

youdao

Myanmar acceded to the Treaty of Amity and Cooperation in Southeast Asia, usually a precursor to full ASEAN membership.

CNN: HEN THE FOREIGN MINISTERS

In 1992, China acceded to the Nuclear Non-Proliferation Treaty, whose extension China later supported in 1995.

CENTERFORSECURITYPOLICY: Center For Security Policy