1.subject to 使服從；使遭受

And standards do not solve everything: RFID, like any other technology, is subject to the laws of physics.
同時，標準也不是能解決所有的事情—像其他技術一樣，RFID也受到物理學的制約。

Although these targets would not be internationally binding, they would be subject to outside verification.
雖然這些目標不具有國際約束力，但它們將受到外界監督。

2.pledge to 保證

He would keep his pledge to the utmost of his power.
他將極力信守他的誓言。

In the Second Training we pledge to practice generosity and not support social injustice and oppression.
在第二項訓練中，我們保證，實踐寬宏大量，不支持社會不公正和壓迫。

3.because of 因為；由于

It is mainly because of my fault.
這主要是由于我的過錯。

His business went under because of competition from the large corporations.
由于大公司的競爭，他的生意陷入了困境。
4.claim to 要求

She relinquished her claim to the property.
她放棄了對財產的要求。

If the goods were damaged in the post,you can put in a claim to the post office.
物品在郵寄過程中如有損壞，可向郵局提出索賠。