英语词汇“keystone”的意思、释义、用法及双语翻译-时代网

词汇	keystone
释义	noun Changes to the welfare system are the keystone of the government’s reforms.
随便看	haplessly haplessness happen happened happening happening happenings happen on happen on sb happen on somebody happen on something happen on sth happen on/upon somebody/something happens happenstance happenstances happens to happens to be happen to do happen to do something happen to do sth happen upon happen upon sb happen upon somebody happen upon something 急弯急待急忙急急急急如律令急急巴巴急急忙忙急急慌慌急急风急性急性子急性病急性睑腺炎急惊风急惊风撞上慢郎中急慌慌急扯白脸急振急救急救包急救箱急救车急早急景急景凋年

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