Microcracking
显微裂纹
🗣️ 情景例句
Well begun, half done.
良好的开始，就是成功了一半。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
The other students in the class keep their eyes closed.
班里其余学生一直闭着眼。