by degrees

US /baɪ dɪˈɡriːz/
UK /baɪ dɪˈɡriːz/
"by degrees" picture
1.

逐渐地, 慢慢地

gradually; little by little

:
The patient's health improved by degrees.
病人的健康状况逐渐好转。
They learned the new language by degrees.
他们逐渐学会了这门新语言。