1.compare to 比喻为;比作

例句:Shall I compare you to a summer's day?

我可以把你比作夏天吗？

2.claim to 声称

例句:That year, at the request of Qatari nobles, the British negotiated the termination of the Al Khalifa claim to Qatar.

同年，应卡塔尔贵族的要求，与英国人谈判终止了Al Khalifa对塔尔的要求。

3.even if 即使

例句:Everbridge allows single entities to send thousands of messages at the push of a button, even if cell towers are down.

在某个单位要进行预警时，只需要通过Everbridge按一个按钮，就可以发送出数千条信息，哪怕通信基站出现故障时也能使用。

4.natural gas 天然气

例句:Japanese researchers working for the government were the first to tap natural gas from seabed methane hydrates this March.

今年三月份，为日本政府工作的研究人选率先从海底的甲烷水合物中提取天然气。