今天我們要學(xué)的詞是guarded。 Guarded, 謹(jǐn)慎的。最新民調(diào)顯示，"Most Americans expressed guarded optimism on President Obama's ability to come up with a successful strategy for Afghanistan," 大多數(shù)美國人對奧巴馬找到策略，成功解決阿富汗問題的能力持謹(jǐn)慎樂觀態(tài)度。

奧巴馬訪華期間試圖說服中國，對伊朗加大壓力。"China remains guarded on Iran's nuclear program," 但是中國在伊朗核項(xiàng)目的問題上保持謹(jǐn)慎態(tài)度。全球最大零售連鎖店沃爾瑪?shù)谌径扔仙?quot;But Wal-Mart remains guarded on its sales outlook for the year-end holiday season," 但是沃爾瑪對年底假日銷量的預(yù)期保持謹(jǐn)慎。好的，今天我們學(xué)習(xí)的詞是guarded...