optimum 
/ˈɒp.tɪ.məm/
 
adj.(also optimal)
best; most likely to bring success or advantage
最优的，最佳的; 优化的
 
Do you know the optimum temperature for the growth of plants?
你知道庄稼生长的最佳温度吗?
 
optimize
/ˈɒp.tɪ.maɪz/
v.(UK usually optimise)
 
to make something as good as possible
使优化，完善
 
We need to optimize our use of the existing technology.
我们需要充分利用现有技术。