そういうことですね。
もうひとつ。

The norm of pronunciation is, generally speaking, "continental." ...
The English speaker should guard against his native tendency to merge
all unstressed vowels in the neutral sound of a in China. ...
e like e in 'met'; ...
r like rr in 'merry' or, better, like r in Spanish 'care'; ...
- "Spelling and Pronunciation" in "Interlingua English Dictionary" by
Alexander Gode, Ph.D. of IALA (IALA 1951, Revised edition 1972)