Retention aid
[化] 助留剂
🧩 词语组成解析
retention
[ri'tenʃən]
n. 保留;记忆力，保持力;滞留，扣留;闭尿;
aid
[eid]
n. 帮助;助手;外援;辅助设备;
vt. 帮助;资助;救助;促进;
vi. 帮助;
🗣️ 情景例句
What would you like to read to them?
你想读些什么给他们听？
I'm sorry, but I can't find the book you lent me.
很抱歉！我找不到你借给我的那本书了。
In 1893 New Zealand was the first nation in modern times to allow women to vote, long before many other countries.
3年，新西兰是第一个在近代就允许妇女参加选举的国家，这比许多其他国家要早得多。