assistance
n.帮助，援助
Can I be of any assistance(=can I help you)? 我能帮什么忙吗?
assistant
n.助手，助理，助教 a.助理的，辅助的
a clerical assistant文书助理
assume
vt.假定，臆断;承担,担任;呈现
I think we can safely assume (=it is almost certain) that interest rates will go up again soon.我想我们几乎可以肯定，利率很快会再次上调。
assumption
n.假定，臆断;担任，承担
My calculations were based on the assumption that house prices would remain steady.我的计算以这个假设为基础，即房价将保持稳定。
