Metallic echo
[醫] 金屬性回聲
?? 詞語組成解析
echo
['?ko]
n. 回聲，共鳴;（言語、作風、思想等的）重復;重復者;[無線電]回波;
vt. 重復，效仿;隨聲附和;類似;發射（聲音等）;
vi. 被重復;產生回響;充滿回聲;
echo-, ech- 表示”聲音 ,噪音”;特備是”回聲”;”重復,模仿”
??? 情景例句
If anyone has any objections, now is the time to voice them.
如果有人反對，現在就可以說出來。
She was promoted on the basis of her accomplishment.
她是依其成就得到晉升的。
Many of the men fell sick with fever.
許多人因發燒而病倒。