School-ager
n. 学龄儿童
🧩 词语组成解析
school
[skul]
n. 学校;上学;学院;群;
vt. 训练，锻炼;教育，教导;约束;给…上学;
[化] 熟化器
🗣️ 情景例句
Give me a cup of coffee, please.
请给我一杯咖啡。
Look, he's high.
瞧，他是个高傲的家伙。
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。