a grove of birch trees白桦树丛We found that birch bark could serve as paper.我们发现桦树皮可以作纸用.They've got a wonderful birch in the back garden.他们在后花园有一棵极好的桦树....
She has a knack of landing herself right in the soup.她老是让自己的处境很尴尬。"I have a knack for making friends, you know," she added meaningfully.“你知道，我交朋友有一套的，”她故意补充说。It's easy, once you've got the knack.你一旦掌握这个技能就容易了。...