“牵强的”用英语怎么说？

较为牵强的方法决不是经常收到好的效果.By no means always do more sophisticated methods produce better results.他的笑容是牵强的,含蓄的.His smile was wry and reserved.由(3.4)式建立的引力收缩判据,对质量较大的云是很牵强的.The criterion for gravitational contraction set by Equa...