Defensive measure
防御措施
🧩 词语组成解析
defensive
[di'fensiv]
adj. 防御用的，防守的;辩护的;自卫的;
n. 守势;辩护;
🗣️ 情景例句
I miss them.
我想念他们.
I'm all washed up.
我都完事了。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。