Chitinase
几丁质酶, 甲壳质酶, 壳多糖酶
🗣️ 情景例句
I'm a photographer.
我是摄影师。
To ride a bicycle
骑自行车
but each year, the dogs are still sent out into the snow whenever a traveller is in difficulty.
但每年还要派狗到雪山地里去帮助那些遇到困难的旅游者，