Amateur station call letters
[电] 业余电台呼号
🧩 词语组成解析
call
[kɔl]
v. 呼唤，喊叫;召唤，叫来，召集;下令，命令;打电话给;
n. 喊叫，大声喊;电话联络;必要，理由;要求;
letters
[[letəz]]
n. 字母；书信；读者投书栏（letter的复数）
🗣️ 情景例句
I find that hard to swallow.
对这一点我难一相信。
Eat to live, but not live to eat.
吃饭是为了生存，但生存不是为了吃饭。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。