1、中肯
没必要做某事 to the point中肯,切题 point at(=indicate,direct attention)指着point out(=indicate,show)指出,指明 ..
2、切题
... under control 处于控制之下 to the point 切中要害,切题 that is (to say) 就是说,即 ...
3、切中要害
... point out 指出 to the point 切中要害 point to 指出,指向(多指教远的事物),意味着 ...
4、切中关键
... in no time 立即,马上 to the point 切中关键,切题 at all 丝毫(不),一点也不 ...