Well, giving strengthens social bonds and at the same time brings us an abundance of joy, right?

给别人礼物能促进社交关系，同时还能带给我们很多快乐，不是吗？

It is a proven fact that fluoride strengthens growing teeth.

氟化物可以强化生长中的牙齿，这是已证明的事实。

Regular exercise strengthens the heart, thereby reducing the risk of heart attack.

经常锻炼可以增强心脏机能，从而减少心脏病发作的危险。

This merely strengthens our resolve to win the pennant.

这只不过坚定了我们赢得锦旗的决心。

Cycling is good exercise. It strengthens all the muscles of the body.

骑车是好的锻炼。它使全身肌肉变得强健。

The study further strengthens the evidence linking smoking with early death.

这项研究进一步加强了联系吸烟与早亡的证据。