n North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
n a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
n a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
n the 21st letter of the Roman alphabet
pron. 我们
[经] 美国
1. We should help us to finish the project on time.
我们应该帮助我们按时完成这个项目。
2. Can you join us for dinner tonight?
你今晚能和我们一起吃晚饭吗？
3. They always support us when we need help.
他们总是在我们需要帮助时支持我们。