First-grade
甲级
🧩 词语组成解析
first
[fɝst]
n. 第一，最初;头等;一号，;[乐]高音部;
adv. 最早，最初;首次;宁愿;优先;
adj. 第一流的;最初的，最早的;基本的，概要的;高音的;
num. 第一;
🗣️ 情景例句
It's a beautiful day, isn't it?
今天天气真美，是吧？
It would help if you could try to speak a little slower.
请你尽量放慢说话速度。
This echo-location in bats is often compared with radar, the principle of which is similar.
蝙蝠这种回声定位常常可与雷达相比较，其原理是相似的。