Scratch hardness tester
[化] 划痕硬度计
🧩 词语组成解析
scratch
[skrætʃ]
vt. 擦，刮;擦痛，擦伤;在…处搔痒;抓破;
vi. 发出刮擦声;擦红，擦伤;搔痒;抓，扒;
n. 擦，刮;刮擦声;搔痕;乱写乱画;
adj. 打草稿用的，随便写用的;碰巧的，侥幸的;东拼西凑的;平等比赛的;
hardness
['hɑrdnɪs]
n. 坚硬;<物>硬性;困难;冷酷;
n. 考试人, 做试验者, 试验装置, 天盖, 华盖\\n[化] 检验器; 试验仪器
🗣️ 情景例句
I didn't have the heart to tell her that she was not chosen.
我没有勇气告诉她说她没有入选。
How long does it take?
火车要开多久？
Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop.
反之，如果恒星很小，维持生命的行星就要在离恒星很近的轨道上运行，而且要有极好的条件才能使生命得以发展，