It currently guaranties 30 thousand plans.44 million Americans are in these plans, but there are limits to how much they can receive if their pension fails.是什么意思_It currently guaranties 30 thousand plans.44 million Americans are in these plans, but there are limits to how much they can receive if their pension fails.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句