Van allen belt
un. 范艾伦辐射带\\n
🧩 词语组成解析
van
[væn]
n. 先锋;厢式货车;增值网;先驱，前驱，领袖，领导人;
vt. 用车搬运;
prep. 〈外〉同“from”;
allen
[[ælin]]
n. 艾伦（男子名）
belt
[bɛlt]
n. 腰带;区域;传送带;带状物;
vt. 环绕，包围;用带做记号;用力打;绕着系上带子;
🗣️ 情景例句
When you have a business meeting in the United States, come to the appointment on time.
当你在美国有商务会晤时，一定要按时赴约。
He has bought 10 tractors for the village.
他为村里买了10台拖拉机。
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。