Ridel-walker test
[机] 里迪尔-沃克试验
🧩 词语组成解析
walker
['wɔ:kə]
n. 散步的人;（帮助小孩学走路用的）学步车;助步车;助行架;
🗣️ 情景例句
and I think
我觉得
I remember the girl whose father earns $ 300 a day.
我记得那个女孩的父亲一天赚三百元。
All this was comparatively slow until, with the coming of science, the tempo was suddenly raised.
所有这些发展都比较缓慢，而随着科学的到来，增长的速度才突然加快。