Lactase
n. 乳糖酶\\n[化] 乳糖酶
🗣️ 情景例句
I would lke to place an order please.
我要下定单。
There's many a good tune played on an old fiddle.
老当益壮。
of a change of atmosphere, of a diversion of effort, is essential.
改变一下气氛，转移一下注意力，这是不可缺少的。