Submachine
[计] 子机
🗣️ 情景例句
Eat your vegetables, they're good for your health.
多吃蔬菜，这对你的健康有好处。
He's absorbed in his book.
他全神贯注地读书。
We need to find one about 30 centimetres(cm) by 30 cm by 50 cm.
我们需要找一只尺寸大约为30（厘米）X 30（厘米）X 50（厘米）的水箱。