Leach's tests
[医] 利奇氏试验(检甲醛)
🧩 词语组成解析
n. 测验（test的复数）
🗣️ 情景例句
Can I help?
我能帮你吗？
How long have you had it?
你得这病多久了？
Inevitably the repair job was not quite so simple.
事实上，修理工作远不是那么简单。