Security measure
安全措施
🧩 词语组成解析
🗣️ 情景例句
She's moving up the ranks one step at a time.
他一步一步的向上爬。
The apple will be eaten quickly.
我能立刻吃掉一个苹果。
Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.
如果有相配的电压，可以煮少量水的便携式热水装置是有用的。