Presence testing
[计] 存在检查
🧩 词语组成解析
testing
[['testiŋ]]
n. 测试\\na. 吃力的, 试验的
🗣️ 情景例句
That's for sure.
那是当然。
He that travels far knows much.
见多识广。
We'll get it right out for you.
我们马上就出货。