Strength grading of cement
[化] 水泥标号
🧩 词语组成解析
[经] 分级, 归类
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
cement
[si'ment]
n. 水泥;胶合剂;胶接剂;粘固粉;
vt. 粘牢;巩固;（用水泥、胶等）粘结;在…上抹水泥;
🗣️ 情景例句
We can write letters. It's cheaper than calling.
我们可以写信就好，那比打电话便宜。
Don't trouble trouble until trouble troubles you.
不要自寻烦恼。
The pie committee telephoned a local garage owner who arrived in a recovery truck to salvage the pie dish.
馅饼委员会给当地汽车修理库老板打电话，他闻讯后开着一辆急修车前来打捞盘子。