Lactics
产乳酸微生物
🗣️ 情景例句
I'd rather walk than take a taxi.
我宁愿走路去，也不愿坐的士去。
You never know what you can do till you try.
事非经过不知难。
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。