Chapter.19

练习内容

[{"word":"troublesome","pronun":"'tr\u028cbls\u0259m","translation":" adj.\u4ee4\u4eba\u70e6\u607c\u7684 \u9ebb\u70e6\u7684 \u8ba8\u538c\u7684 \u56f0\u96be\u7684 \u68d8\u624b\u7684"},{"word":"pipeline