提示：点击例句中的单词，就可以看到词义解释

Eurozone leaders have vowed to safeguard their currency .

欧元区各国领导人已发誓要捍卫欧元。

Mr. thompson also vowed to better exploit user data .

汤普森还誓言要更好地利用用户数据。

Most big countries had vowed to cut or limit emissions during the previous few weeks .

大多数的大国在会议之前的几周里都承诺减少排放或是限制排放。

She vowed to stay in touch with friends by phone and email .

她郑重承诺会与朋友们保持电话和电子邮件联系。

All three presidential candidates have vowed to close guantanamo .

所有的3名美国总统候选人都立誓要关闭关塔那摩监狱。