🧩 词语组成解析
a. 免疫化学的
assay
[ə'se]
n. 化验;试验;<古>尝试;试金;
vt. 化验;试验;考验;分析;
vi. 经检验证明内含成分;
🗣️ 情景例句
This has been a hard course for me.
这门课对于我来说很难。
I'm tired of going to school day after day.
我厌倦每天上学。
but more often than not, the greater part of the journey is spent on roads with few service stations and too much traffic.
但旅行的大部分时间都花在路上，而且只有很少的服务设施，交通也很拥挤。