After a G7 meeting at which his behaviour was eccentric even by his own high standards, Donald Trump has added new and complex layers to the question of how on earth the other big trading powers should deal with him. This is one of the few areas in which experience does not necessarily bring wisdom. The US president’s actions are now so volatile that each extra piece of data, if anything, makes it harder rather than easier to discern his decision criteria and create a game plan accordingly.
在這次七國集團(G7)會議上，唐納德?特朗普(Donald Trump)的行為即便以他自己的標準來衡量也可說非常怪異，讓“其他貿易大國究竟應該如何與他打交道”這個問題變得更加復雜。這是為數不多的幾個經驗不一定帶來智慧的領域之一。如今，特朗普的行為相當反復無常，以至于每一項額外數據（如果有的話）都讓確定他的決定所依據的標準并制定相應計劃變得更難、而不是更容易。
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