厨师

There is another form of wilful obscurity that masquerades as aristocratic exclusiveness.

还有一种故意造成的含糊其词，用以掩盖其贵族老爷式的孤傲态度。

Further increasing the Mo content results in the remarkable decrease of acrolein selectivity.

Mo含量进一步增加，催化剂的丙烯选择性增加而丙烯醛选择性下降。