有许多种氨基酸人体自身不能合成.There are many amino acids that the body cannot synthesise itself.有许多种氨基酸人体自身不能合成。There are many amino acids that the body cannot synthesize itself.丙氨酸在转氨作用中似乎是更好的氨基酸.Alanine appears to be the preferred a...
遗憾的是，过于简单的情节使得这部电影差强人意。Sadly, the film is let down by an excessively simple plot.画一些简单的形状让孩子涂上颜色。Draw simple shapes for your child to colour in.他过上了一种简单的生活，将自己的需求降到最低限度。He reduced his needs to the minimum by simplifying ...