请问什么是first marking period grade?

请问什么是first marking period grade? marking application Raised Marking 请用汉语帮我译一句话The first stamps marking the opening came out on January 25kkkkkkkkk 什么是first class lever 什么是first name 什么是first-principles calculations 请问英文什么是时态,conditionals:zero,first,second and third conditional. 请问Do you intend to enroll in a degree program your first year?什么是学位课程 请问the first 请问first available 请问best before first 什么是t,什么是p? jewellery marking是什么意思? “non marking”是什么意思? free of marking non-marking是什么? non-marking outsole是什么意思?