Plural of echo

• Reflected sounds heard again; repeated effects or responses

echo 的复数形式

• 再次听到的回声；重复的影响或回应

Nonstandard plural spelling of echo; variant of echoes

echo 的非标准复数拼写；为 echoes 的变体

Plural of echo meaning an echocardiogram in medical use

医学用法：echo 的复数，指超声心动图