🧩 词语组成解析
backup
['bækˌʌp]
n. 支持，后援;阻塞;<计>备份文件;[乐]伴奏;
adj. 备用的，后补的;支持性的;伴奏的;
🗣️ 情景例句
Life is full of ups and downs.
生活充满起伏。
He has a pair of shoes.
他有一双鞋。
I'll tell the shipping superintendent about it for you.
我会把这事告诉出货组长。