生物医药大词典
英文: Of course plenums are always optional.
中文: 在模拟中，是否设置静压箱是可选的。英文: Is that optional course as hard as everybody says?
中文: 那个选修课真的就像每个人说的那样难吗?英文: W: Is that optional course as hard as everybody says?
中文: 那门选修课象别人说的那么难吗？英文: Preliminary Exploration Teaching Reform of the Optional Course of Enzyme Engineering
中文: 酶工程选修课教学改革初探英文: Practice and Discussion on Bilingual Teaching in Optional Experimental Course for Bioengineering Specialty
中文: 实践教学中双语教学问题之探讨——以生物工程专业实验选修课为例