Handheld
a. 掌上型；手持型
🗣️ 情景例句
How are you getting on with your studies?
你功课情况如何？
The line is busy.
占线。
the necessary method of study is to group the relevant material and to take note of all possible variant forms and conditions.
应采取的研究方法是，把有关各方面的材料汇集起来，同时注意任何可能出现的异常情况和条件。