Radio aid to navigation
[电] 无线电导航设备
🧩 词语组成解析
aid
[eid]
n. 帮助;助手;外援;辅助设备;
vt. 帮助;资助;救助;促进;
vi. 帮助;
to
[tu,tə]
prep. 向，朝着;到;关于;属于;
adv. 朝一个方向的;到某种状态;关闭;
🗣️ 情景例句
Marriage is an institution not to be taken lightly.
婚姻是个不能儿戏的体系。
Are you free tomorrow?
你明天有空吗？
Yes, and full payment is due within 30 days.
是的，如果在30天骨付款就没有折扣。