| 1 | A contract is either bilateral or unilateral. | |
| 2 | Our bilateral relationship has long been of great personal interest to me. | |
| 3 | To date, only Germany and South Korea have bilateral agreements with China. | |
| 4 | China and the United States concluded [entered into] a bilateral trade agreement after long negotiations. | |
| 5 | Other key providers of bilateral aid to HE in the developing world include Japan and Sweden. |